Can roof insulation cause damp?

It’s common this time of year, across Autumn and Winter when people begin to notice ‘damp patches’ in their homes, which are often mistaken for roof leaks. More often than not the damp isn’t caused by a leak at all, however caused by incorrectly fitted roof insulation.

How do I know if roof insulation is causing damp?

You can often tell if there is condensation and damp in a loft space if there are noticeable patches of damp, moisture inside of the windows, as well as black spots on the walls of the property. This damp, if not treated can spread to items being stored away in a loft space such as fabrics. In extreme cases, the damp and mold present can lead to significant health risks, as well as damage to the roof timber battens, which can begin to rot away.

How can roof insulation cause damp?

It’s important to remember that a roof needs plenty of ventilation. With a restricted airflow, like most things when the heating is switched back on, a roof can begin to sweat. This is because of condensation and excess moisture builds up when warm, humid air inside the property comes into contact with a cold surface, such as the exterior walls and windows of the property. This warm air is unable to hold the moisture it’s carrying and releases tiny droplets of water against the surface.

This restricted air flow is usually the result of too much insulation without a gap, which can cause the roof to sweat and create condensation resulting in damp and moisture in the home, often mistaken for a roof leak.

How to treat damp and condensation inside a loft space

If you believe a client may be damp and condensation inside a loft space, the issue should be treated as soon as it is noticed.

Rule out any other factors

To first treat the damp inside the roof space, you must ensure that you check for any else that could be causing damp inside that roof space, such as a broken or slipped roof tile, a crack in the leadwork or even a leak or blockage in the guttering or drainage of the roof.

Assess the ventilation in the roof space

You should always ensure any items such as storage boxes are kept away from ventilation points as well as ensuring all items are kept at least 5-10cm away from the walls of the loft.

Assess the current wall insulation to ensure it has not been damaged by things such as birds, insects or rodents as well as other factors. If damaged, ensure the insulation is replaced with a breathable loft insulation, with at least a 50mm gap to allow airflow, and a vapour barrier to protect against condensation.

When installing loft insulation, always ensure you leave a minimum of 250mm gap near the eaves. Keeping this area free and clear ensures that airflow can freely pass up the entire roof elevation and therefore help reduce sweating in the loft space.

Add ventilation

When you have assessed the roof and loft, and concluded that the damp is being caused by the insulation, you may wish to add ventilation to improve air flow, through the following options:

  • Roof Tile Vents – There are a wide range of roof tile vent to suit every roof tile or slate, specifically designed to blend into a roof, yet give a loft space sufficient ventilation without allowing any moisture to enter the loft space below, ensuring it is left  clean and dry.
  • Vented Fascia, Soffit, Ridge and Eaves Support Trays – Installing ventilation at the roofline is a very common application for new builds and roof renovations. Installing over facia vents, vented soffit boards or continuous rafter trays all help airflow pass up the bottom section of your roof elevation. At the top of the roof, refixing ridge tiles using a dry ridge kit will allow airflow to escape out the top of an elevation therefore creating a cool and well ventilated loft space.
How can we help?

If you have a client struggling with damp in their home due to insufficient roof ventilation, we can provide the materials to help!

Here at Kidderminster Roofing Supplies ltd, we can provide a free no obligation quotation for all roofing materials you need, even a wide range of low pitch roof tiles to match any roofing project! Contact us today to see how we can help you.

Tel: 01562 748270


Or drop us a message on Facebook!

The challenge and solutions of low pitch tile projects

Planning on building a new extension for a client? Extensions are a great way to add value onto a property, as well as a little extra space.

Your client may opt for a traditional pitched as they not only look good, however they also offer multiple benefits such as good drainage while also requiring fewer materials to be used which also lowers building costs.

However, although a pitched roof extension may seem the most desirable option on a new extension project, they can have disadvantages.

This blog aims to explore when a pitched roof can cause an issue, particularly when it comes to finding the right tiles, and what solutions there are available.

Considerations and solutions for a pitched roof extension
Finding the right tile

The hardest part of building a pitched roof extension is finding the right tile that matches the main roof of a building, particularly as they will need to perform at a lower pitch than traditional roof tiles. This is due to the position of the first-floor windows.

Many of the traditional clay plain tiles can only be lay down to 35°-30. Newer, profiled interlocking clay tiles however can achieve the appearance of a traditional clay tile and can be lay as low as 12.5°, making them the ideal choice for any pitched roof extension project where the roof pitch is lower than property, and where the tiles need to match the appearance of the original clay roof tiles of the main building.

Water run off

A lower pitched roof can have direct implications on water run-off and for weather proofing as a lower pitch can cause a greater amount of water to collect and run off the slope.


As normal contour vents can often only be lay down to a pitch of 20°, this makes tile vents unsuitable for low pitch roofs extensions, however you can have a dry fix eaves vent system fitted to solve the issue of ventilation.

Building Regulations

Although since 2019, (with the exception of some designated areas  such as areas of conservation) you no longer need planning permission for a single story extension provided it is up to 6 metres for terraced and semi-detached property, and 8 metres for a detached property, the extension will still need to conform with the Building Regulations and British Standards.

With this in mind, all pitched roofs on extensions must comply with building regulation BS 5534.

How can we help?

Here at Kidderminster Roofing Supplies ltd, we can provide a free no obligation quotation for all roofing materials you need, even a wide range of low pitch roof tiles to match any roofing project! Contact us today to see how we can help you.

Tel: 01562 748270


Or drop us a message on Facebook!

How to repair a roof in the rain

Now the weather seems to be turning, and when the rain never seems to end, you may wonder how you’ll ever get a roof repair or re-roof job done.

Fortunately, it is possible to work on a roof, even if it is raining, with the exception of a flat roof repairs.

This blog aims to explore the benefits of roofing in the rain, and how to work when you’re faced with the British summer rain.

The benefits of working in the rain

There are actually benefits to roofing in the rain, including:

Assessing water drainage – By working in the rain, you are able to correctly assess how the water is draining from a roof, and quickly work out the root cause of any leaks without any unnecessary repairs to other areas of the roof that are not affected. This could include areas where water seems to be pooling, or assessing if the damp inside the property is worse on rainy days, and whether or not there is a roof leak at all.

Keeping cool – Working on a roof can quite warm, particularly when in direct sunlight and in layers of clothing required for correct PPE. Cooler days and rain can be a blessing in the summer, provided that it is safe.

How is it possible to roof in the rain?

Work in small sections

The key to any roofer that needs to work in the rain is to assess and repair the roof in small sections.

This can be done either through repairing section by section, or if doing a complete re-roof, using a tarpaulin to reduce any exposure to the rain in the areas still yet to be worked on.

Working on a roof in small sections allows for the areas to be re-tiled/slated before moving onto the next section. It’s difficult to predict how the weather can change day by day, so by ensuring a roof is done in sections, the risk to the roof being exposed to the elements is reduced.

Risk assessment

An element of best judgement when assessing the weather conditions prior to carrying out any job and determine the risk of slipping. If the risk is high, no work should be carried how, however if the risk is low both on the roof itself as well as the scaffolding around, and the rain isn’t excessive and heavy, work should be fine to continue.

Wear correct PPE

Correct PPE should always also be used by a contracted roofer to ensure they are protected and seen.

Make sure you have the right tools for the job at reach

Reduce the amount you are climbing up and down the ladder by making sure you have all the tools and materials you need with on site when you need them.

How can we help?

If you have a client in need of a roof repair, we can help! Here at Kidderminster Roofing Supplies ltd, we can provide a free no obligation quotation for roofing materials and tools you need. Contact us today to see how we can help you!

Tel: 01562 748270


Or drop us a message on Facebook!

Preparing a roof for Autumn and Winter

With the Autumn months just around the corner bringing falling leaves and excess waste, you may want to consider offering your services to help prepare client’s roofs for the colder, wetter months.

In this blog, we aim to explore the best ways to get a roof top Autumn and Winter ready, and how it can benefit your customers in the long run.

Why should I prepare a roof for Autumn and Winter?

The changing of seasons bring with it changes in temperature as well as other environmental factors such as changes in behaviour of animals and vegetation which can cause issues for a roof, even if on the surface it looks absolutely fine.

Here are just some of the things that pose a risk to a roof during the Autumn and Winter months:

Falling Leaves – As the weather turns, as do the leaves begin to change and fall, often landing on rooftops and collecting in gutters and down-pipes, causing them to clog and overflow.

Freezing Temperatures – As water freezes in the winter, it causes the water to expand. Any areas on your roof that risk collecting excess water, risk freezing and expanding causing further damage to your roof. Areas that collect water can include blocked gutters and down-pipes that when the water freezes can become warped beyond repair, mossy tiles that can crack and break as the trapped water in the moss expands on the tile, as well as pools of water trapped on a flat roof freezing and expanding to further damage the flat roof and increasing the size of the pool.

Abandoned nests – Abandoned bird nests can cause blockages on a roof, preventing ventilation or even trapping water which can cause damage to your roof. As birds are leaving their nests, now is the time to consider removing once you can guarantee no birds are living in them.

How can I prepare a roof for winter

Remove Moss from tiles where possible – Moss can grow anywhere that is damp and shaded, making rooftops and gutters the perfect place to live. When moss grows on a rooftop it can cause damage to the tiles or slates by both holding water, causing roofing materials to rot, or even causing trapped water to freeze and expand, damaging the tiles or slates, making them move, slip or even crack. Its important to remove the moss where possible without further damaging the tiles. Read our blog on the best way to remove moss from a roof.

Clear gutters and downpipes –  When a gutter and down-pipe becomes  blocked the rainwater can no longer drain properly from the rooftop, causing water to overflow and even re-route, which may cause interior as well as exterior damage to a home. It is important to have gutters and down-pipes regularly cleared to prevent blockages.

Ensure good roof ventilation – It’s important to remember that a roof need plenty of ventilation. With a restricted airflow, when the heating is switched back on, a roof can begin to sweat. Make sure the roof ventilation is clear and plenty of space has been given around your roof insulation to allow your roof to breath.

Remove abandoned bird nests – To ensure birds to not return to your roof top the following year, consider removing the old nests that are no longer being occupied by birds, and provide alternative homes around your garden with the use of bird houses. This may include bird nests inside roof eaves as well as inside chimneys.

Install a gutter guard or hedgehog in your gutters – Although gutter guards and hedgehogs do not completely prevent blockages in gutters, they can prevent major clogs in ]gutters from larger items getting stuck, which will reduce the requirement to clear the gutters frequently.

How can we help?

To successfully prepare a roof for autumn and winter, you will need the correct tools and equipment to do the job safely and effectively. Here at Kidderminster Roofing Supplies ltd, we stock everything you need to do the job right. Contact us today to see how we can help with you!

Tel: 01562 748270


Or drop us a message on Facebook!

Understanding Asbestos

If you are working on an older property, it is likely to have an element of asbestos if it hasn’t already been removed. You or the homeowner may wish to leave it, or decide to remove it. Whatever you decide to do with it, it is always important not to disturb it, and leave handling any asbestos product to a licenced professional.

This blog aims to explore asbestos, What it is, when it can become a risk and how to remove it.

What is asbestos and why is it so dangerous?

From the 19th century, asbestos was concerned to be a wonder product, being used in everything from building materials to children’s toys. This was because it possessed many desirable properties such as being heat and fire resistant, it is stronger than steel, cannot biodegrade, cannot dissolve in water or evaporate.

There are different types of asbestos which can be distinguished by their colour. Brown asbestos, known as “amosite” is the strongest of these and most hazardous to health, with white asbestos known as “chrysotile” being the one most used in building materials, in particular roofing sheets and insulation.

Although chrysotile asbestos is still hazardous to health, it is only dangerous if it is inhaled. Often asbestos inhalation can go undetected as it has no smell or symptoms, with the damage only becoming apparent late in life. The affects of excess exposure to asbestos can include lung cancer, mesothelioma, as well as asbestosis.

What should I do if I suspect a property has asbestos?

If you suspect a property has asbestos in the roof, do not panic. Asbestos only becomes a risk if it is disturbed, broken, and becomes airborne. If you believe there is asbestos in a roof, and feel that it needs to be removed and replaced, make sure you get an approved licensed professional to remove the asbestos safely and dispose of it correctly.

How is asbestos removed?

Prior to removing asbestos, a professional would need to conduct a survey to assess where the asbestos is. Once the asbestos has been established, the professional would need to conducts a Risk Assessment and build a Management Plan in accordance with the guidelines of the Health and Safety Executive (HSE) for working with ACMs. If the asbestos is deemed as dangerous, a contractor licensed by the HSE would be required to remove the asbestos.

Depending on the nature of the premises the licensed contractor must then notify of the work at least 14 days prior to removal. This will be either the HSE or the Environment Agency of the Local Authority.

The licensed Contractor is then responsible for ensuring that they are wearing appropriate PPE to protect themselves from asbestos exposure, the area in which the asbestos is being removed is sealed to prevent exposure to others, and the asbestos is correctly bagged to ensure it is sealed and safe in asbestos waste sacks. The asbestos should be correctly labelled and safely deposited of at a specialist licensed asbestos disposal site.

Once removed, the area the asbestos was removed from should be thoroughly cleaned through, removing all asbestos to any surfaces. Once the clean is complete, it should be inspected by an independent UKAS accredited laboratory who will assess and carry out an air test to determine if the safety provisions can be removed and work continue once they are satisfied the area is asbestos-free.

How can we help?

Why am I struggling to get hold of some roofing materials?

You may have noticed or overheard about the building materials shortage that has hit the UK recently. Perhaps you are waiting on some materials for a job you’re scheduled to do, and are unsure how long you are going to have to wait.

This blog aims to explain some of the causes for the current building materials shortage, what roofing materials are currently affected, how this may effect you, and what can be done to avoid getting stuck.

What is causing building materials shortage?

Demand – Since the first lockdown in March 2020, home improvements and renovation became wildly popular, with homeowners deciding to improve their homes with the money they’d usually spend on holidays and going out. This in turn caused a massive demand in building materials, which had a knock-on effect on manufacturers struggling to keep up with the sudden demand, which we are still seeing today.

Raw materials – Due to a massive global demand, there has been a mass global shortage of raw materials preventing production of many vital building products.

Brexit uncertainty – The CLC (The Construction Leadership Council)  have reported that roughly 60% of the UK’s building materials come from the EU, and despite trade deals easing, core suppliers across Europe have lengthened their supply lines as a result.

A reduction in labour – Many factors have effected labour in the building industry. In particular the UK settlement scheme saw many Eastern European construction workers and lorry drivers return to their respective countries ahead of its deadline date on June 30th. Not only that, but a large number of workers in the UK have been asked to self-isolate either after showing symptoms of COVID-19 after being in contact with someone who has tested positive, which has dramatically slowed down labour, production of materials as well as the transport of materials.

What roofing materials are most affected by the shortage?

Timber – Since March 2020 there has been a nationwide shortage of timber due to a high demand of wood products.

Roof Tiles – Roof tiles are experiencing longer lead times in production, with lead times for concrete tiles between 20-36 weeks, and lead times for clay tiles between 4-8 weeks from most manufacturers.

Cement – Many roofing products contain cement, such as concrete roof tiles, cement fibre slates as well as corrugated roofing sheets. The HS2 development has demanded high supply of cement meaning that manufacturers of these products are struggling to keep up with demand.

What effect is this shortage having?

Longer lead times – Longer lead times on product manufacture has resulted in longer lead times for professional roofers to complete projects which has had a knock-on effect on roofing projects such as new roofs and repairs.

Price increase – Prices on certain materials have had to increase due to the lengthening of lead times, which in turn has made it increasingly difficult for manufacturers and suppliers to build up their stock reserves. This means that roofers are having to increase their prices to purchase the right materials for the job.

When can we expect the shortage to end and what can be done?

It’s hard to anticipate when the shortages will end, with a bottle neck of demand pushing lead times further and further back. With so much uncertainty, we recommend that you:

Plan ahead – If you have a roofing project on the horizon for a client, plan as far in advance as possible to avoid any unnecessary price hikes.

Keep in touch with merchants – Keep close to a reliable roofing materials merchant, and if possible, pre-order materials as early as possible to ensure they can order and reserve them in stock ready for your upcoming project. Here at Kidderminster Roofing Supplies ltd we are more than happy to reserve stock for you for an upcoming date.

Consider reclaimed materials – If you have a longer than expected lead time on new roofing materials such as tiles and slates, consider discussing with your client the option of using reclaimed materials if possible. Read our blog on Reclaimed Roofing Materials and how they can benefit your client’s project.

How can we help?

Here at Kidderminster Roofing Supplies ltd, we can provide a free no obligation quotation for all roofing materials, even the ones that are hard to get hold of! Contact us today to see how we can help you.

Tel: 01562 748270


Or drop us a message on Facebook!

Why does a roof creak?

It is very common for homeowners to hear creaking sounds from their attic and assume its either a sign their roof is going to suddenly collapse or that there is a ghost or a trapped animal in their attic.

The answer is that it is very unlikely to be any of these things, and actually the result of simple environmental factors affecting your roof, with little to no damage.

This blog aims to explore what is actually happening when a roof appears to creak in the night, and what can be done to prevent it.

What causes a roof to creak?

Ever noticed when a wood floor is lay, its always a big gap around the edges? This is because wood moves with a slight change of temperature.

Every good carpenter knows that it is important to give wood plenty of room to move when building furniture, doors and even building structures. This is similarly the case for the timbers which have been used in a roof structure.

As the day goes, a roof will heat up in the morning sun, and cool down in the evening when the sun sets. The timbers which have been used in the structure of your roof will then respond to the changes in air temperature causing them to expand or contract causing strange sounds from a roof.

What can be done to prevent a roof from creaking?

Although a change in air temperature it won’t necessarily damage a roof, if the noise is becoming annoying to the homeowner, they can opt to have a ventilation system installed to reduce the creaking by trying level out the air temperature in their attic space, which will in turn prevent the timbers from contracting as much.

Increasing the ventilation in a roof can also have additional benefits such as reducing the amount the roof sweats in the winter when the heating is back on, as well as helping to keep a home cooler in the summer months.

When to call the professionals

Ventilation to reduce the sound should always be fitted by an experienced roofer,

Similarly if the roof noises are inconsistent, or starting to sound louder and more concerning, it is always advised a homeowner contacts a professional roofer to survey the roof to ensure it is safe.

How can we help?

Here at Kidderminster Roofing Supplies ltd, we stock a wide range of Roof Ventilation options. Contact us today to see how we can help you!

Tel: 01562 748270


Or drop us a message on Facebook!

Leaking, damp chimneys and what can be done to stop it

Client worried about damp in their home, and think it may be coming from the chimney?

Chimneys leaking is a very common issue for many homeowners and can cause serious issues if left untreated.

What can cause a chimney to leak?

In the past many homes were built when an open fire or log burners were often the only way to heat a home, and chimneys were a necessity to vent smoke from the home. Eventually gas fires became popular and similarly needed a chimney to vent the gas fire away from the home.

In the modern day, most people now have electric fires in their home and many chimneys are now going unused and forgotten about. These forgotten chimneys that are no longer in service anymore tend to be left open at the top and when they’re not being used or heated up, this can cause them to get damp. The open chimney can also be exposed to unwanted blockages which can cause further damp and leaks such as birds nesting.

What can be done to stop a chimney leaking?

Thankfully when it comes to stopping a chimney to leak or get blocked, the answer is simple, just cover over the exit of the chimney on the roof.

This can be done by installing a cowl on top of the chimney pot to prevent as range of issues such as birds nesting, water ingress but it also helps to ventilate the stack.

How can we help?

Here at Kidderminster Roofing Supplies ltd, we stock a wide range of Chimney Pots and Accessories for any chimney repair. Contact us today to see how we can help you!

Tel: 01562 748270


Or drop us a message on Facebook!

Can bird droppings damage a roof?

Just like a clean car, it is impossible to prevent birds from pooing on a rooftop, and simply something we all need to expect. What might be surprising is that bird poo can be quite damaging to roofing materials if left untreated.

This blog aims to explore just how damaging bird poo can be to a roof, as well as ways to prevent and remove bird poo from a roof in the future.

How does bird poo damage a roof?

There are two ways bird poo can damage your roof, through direct contact as well as blocked gutters.

Direct material damage – Bird poo can damage a roof by attacking the surface of materials such as the tiles with direct contact through Ulric Acid. As all birds do not urinate, all bird droppings contain uric acid which is a biproduct as their bodies try and remove any nitrogenous waste from their body. This means their poo appears as am acidic white liquid, which if left alone can begin to erode most surfaces such as concrete, paint, and even roofing materials such as tiles, slates, and plastics.

Blocked gutters and drainage issues – Not only can bird poo directly damage materials, however secondary waste such as seeds which have passed through the bird into their poo can be left in gutters and begin to grow, causing gutters to become blocked with self-seeding vegetation. Bird waste can also build up and re-route roof drainage causing leaks.

How can bird droppings on a roof be prevented?

Trim overhanging trees – If there are any overhanging trees on over a rooftop, it is likely birds will be sitting in the branches and their dropping are landing on the roof. If this is the case, the best thing to do is to get a professional tree surgeon to cut back any overhanging branches to prevent birds sitting above a rooftop

Put up bird deterrents – Most birds will learn to avoid the area when they hear the sounds of other birds they want to avoid.

Put up bird houses – If you find that birds are nesting in a roof which is causing a build up of bird waste on a roof, the best thing to do is to put alternative homes around the outside of the property to encourage the birds to nest elsewhere next year.

How can bird waste be removed from a roof?

Wash with a hose – Bird waste can be removed from a roof using a powerful garden hose. Never use a pressure washer to remove the waste as these can damage the tiles more so than the bird droppings them self.

Send in the professionals! – Its important that anybody who has concerns about excess bird waste on their roof has a professional roofer survey the area to assess the damage caused, as well as clear any gutters that may be blocked and causing the drainage to re-route.

Here at Kidderminster Roofing Supplies ltd, we can provide a free no obligation quotation for all roofing materials and tools for an experienced roofer. Contact us today to see how we can help you, whether you are looking to do a simple gutter clean or a complete re-roof.

Tel: 01562 748270


Or drop us a message on Facebook!                                                                                

How to keep your cool in the summer – Roofing in the heat

With temperatures soaring these last few weeks, it can be difficult to undertake any work on a roof without extreme discomfort and risk to health. Excess sun exposure can lead to heat stroke and severe skin damage.

We have been asking experienced roofers their advice for staying safe and keeping cool under extreme heat when working. Here is just some of their top tips:

Always have sun lotion – We often only associate sun lotion with holidays, but sun lotion should be used whenever you are exposed to the sun, even at work. Try to keep a high factor lotion on, applying 30 minutes before sun exposure and reapplying every 2 hours.

Regular breaks in a shaded area – When working on a roof, it may be tempting to work until the job is done, however in direct sunlight this could be damaging to you and your skin without taking regular breaks in a shaded area throughout the day. Try and stay aware of how long you have been working, setting regular alarms if necessary, to remind you to take a break from the sun to rest and hydrate.

Keep a bucket of water nearby – Provided the bucket is safe with no risk of falling and damaging property or people below, a good tip is keeping a bucket of water nearby for regularly splashing your face when you need to cool down. Make sure to reapply sun lotion once you have dried your face.

Wear loose fitted clothes – Wearing loose fitted clothes can help improve airflow and avoid the risk of overheating, particularly when moving around a lot of the job, however always ensure the clothes you are wearing are safe for the job and in line with PPE regulations.

Take ice packs – Keeping ice packs nearby is a great way to cool down while working, placing them on your neck or face regularly throughout the day.

Take plenty of cold water in a cool box – Staying hydrated while working in the heat is key. Keep plenty of bottles of cold water in a cool box and try to avoid alternatives such as fizzy pop drinks and energy drinks which could dehydrate you even more.

Work out of the direction of the sun – If possible, try work in the opposite direction of the sun, working in the shaded areas of the roof as the sun moves across the sky to avoid constant sun exposure.

Wear a hat – A hard hat not only protects you from potential falling objects but can also protect you from the sun. try to avoid the temptation to remove this as it is serving a vital purpose.

Avoid neglecting your PPE – It can be tempting to ditch the PPE for less layers, however PPE has a vital role in protecting yourself as well as others, and neglecting it can cause serious issues and even get you into trouble.

Make sure you have all the materials for the job

Avoid waiting around in the heat for materials you’ve forgotten for the job.

Here at Kidderminster Roofing Supplies ltd, we can provide a free no obligation quotation for roofing materials and tools you need to get the job done, no matter the weather. Contact us today to see how we can help you!

Tel: 01562 748270


Or drop us a message on Facebook!