Roof Paints

Roof Types and Materials

Pitched Roofs

Pitched roofs are characterised by their sloping surfaces, commonly found in residential properties. These roofs efficiently shed water and are made from materials like clay tiles, concrete tiles, slates, and metal sheets. They offer excellent durability and aesthetic appeal, making them a popular choice for homes, churches, pubs, and hotels. 

Coatings needed for pitched roofs include waterproofing paints, solar reflective coatings, and high-build elastomeric coatings to handle thermal expansion. For example, elastomeric roof coatings like Rust-Oleum Mathys Dacfill can flex with the roof's movements, preventing cracks and leaks.

Flat Roofs

Flat roofs, while appearing flat, have a slight pitch to allow for water drainage. They are commonly used on commercial buildings but are also seen in modern residential designs, such as inner-city apartments and business units. Materials for flat roofs include felt, asphalt, EPDM rubber, TPO, and concrete. These roofs require seamless waterproof coatings, solar reflective paints, and liquid-applied membranes to prevent ponding water. Products like Rust-Oleum Mathys Dacfill HZ provide a robust waterproof barrier, sealing against ponding water within an hour of application.

Metal Roofs

Metal roofs are known for their durability and long-lasting properties. They are made from metals such as galvanised steel, aluminium, and copper, and are increasingly popular for both residential and commercial properties. Commonly found on barns, sheds, and industrial estates, metal roofs require anti-corrosive primers, waterproofing topcoats, and UV-resistant paints. Rust-Oleum Noxyde Plus, for instance, offers a rust-proof, waterproof membrane suitable for harsh industrial environments.

Commercial and Industrial Roofs

Commercial and industrial roofs cover large surface areas and are designed for durability. These roofs are common in retail estates, industrial parks, and large commercial buildings. Materials used include composite panels, corrugated metal, and built-up roofing (BUR). These roofs require heavy-duty waterproofing systems, reflective coatings, and coatings resistant to industrial pollutants. Tor Coatings’ Torclad range provides high-performance solutions for large-scale industrial applications.

Domestic Roofs

Domestic roofs include a variety of designs such as pitched, flat, and more complex architectural styles. These roofs are found on homes, caravans, mobile homes, and other residential buildings. Materials can range from tiles and shingles to metal. Domestic roofs need durable waterproofing paints, colour-stable coatings, and thermal reflective systems. Products like Blackfriar Professional Solar Reflective Paint are ideal for enhancing energy efficiency in residential buildings.

Roofing Types That Can't Be Painted

While many roofing materials can benefit from a coat of paint, some roofing types are unsuitable for painting due to their material properties or design:

• Thatch Roofs: Made from dry vegetation such as straw or reeds, these roofs are not suitable for painting. They require specialist maintenance to ensure their longevity and effectiveness.
• Green Roofs: Covered with vegetation, these eco-friendly roofs rely on the natural materials for insulation and drainage. Painting these roofs would disrupt their ecosystem.
• Certain Membrane Roofs: Some single-ply membrane roofs, like PVC or TPO, may not be compatible with traditional roofing paints unless specifically designed for these materials. Always check with the manufacturer before applying any coating.

Single and Two-Pack Roof Paints

Single-Pack Roof Paints:

• Description: Ready-to-use paints that require no mixing before application. They are convenient and easy to apply, making them popular for DIY projects.
• Benefits: Quick and simple application, ideal for smaller projects and touch-ups. Examples include Teamac Acrylic Roof Coating, which offers excellent waterproofing and UV resistance.

Two-Pack Roof Paints:

• Description: These paints consist of two components that must be mixed before use, typically a resin and a hardener.
• Benefits: Provide a more durable and long-lasting finish compared to single-pack paints. They are ideal for heavy-duty applications and areas exposed to harsh conditions. 

Different Paint/Base Types and Chemistry

Roof paints can vary based on their base types and chemical compositions:

• Acrylic Paints: Water-based, environmentally friendly, and easy to apply. They provide good UV resistance and flexibility. Example: Rust-Oleum Mathys Dac Hydro Alu.
• Bituminous Paints: Asphalt-based, providing excellent waterproofing for flat and metal roofs. Ideal for areas exposed to constant moisture. Example: Cromar Bituminous Roof Coating.
• Elastomeric Paints: Highly flexible, able to stretch and contract with the roof’s movements. They are perfect for areas with significant temperature fluctuations. Example: Britannia Flexacryl.
• Polyurethane Paints: Offer superior durability and resistance to chemicals, making them ideal for industrial environments. Example: Kovertek PU Roof Coating.

Roof Membranes and GRP Elements

Roof Membranes:

• Description: Roof membranes, such as EPDM, TPO, and PVC, provide a continuous, waterproof barrier.
• Coatings Needed: Specialised coatings that bond well with the membrane material. Elastomeric and polyurethane coatings are often used for additional protection.

GRP (Glass Reinforced Plastic) Elements:

• Description: GRP is a robust and durable material used for roofing and other architectural elements.
• Coatings Needed: UV-resistant and flexible coatings to protect against environmental damage and prolong the lifespan of GRP roofs. Example: Cromapol Acrylic Roof Coating.

Painting Around Skylights and Roof Windows

Painting around skylights and roof windows requires careful preparation and precision:

• Preparation: Clean the area thoroughly and mask off the skylight or window to prevent paint splatters.
• Application: Use a brush or small roller for precision and ensure the coating integrates seamlessly with the rest of the roof. Special attention is needed to ensure a waterproof seal around these features.

Garage Roofs, Guttering, and Chimneys

Garage Roofs:

• Materials: Often made from metal or felt.
• Coatings Needed: Waterproofing paints and anti-corrosive coatings to protect against leaks and rust. Products like Britannia Aquashield provide excellent protection.

Guttering:

• Materials: Typically made from metal or plastic.
• Coatings Needed: Anti-corrosive paints for metal guttering and flexible waterproof coatings for plastic. Properly coated guttering helps prevent leaks and prolongs the system’s life.

Chimneys:

• Materials: Made from brick or stone.
• Coatings Needed: Waterproof and breathable coatings to prevent water ingress while allowing moisture to escape. Example: Rust-Oleum Mathys Murfill Waterproofing.

Roofing Material Shapes and Designs

Roofing materials come in various shapes and designs, influencing the type of coating required:

• Panelling: Metal or composite panels used in commercial and industrial roofing need durable, UV-resistant coatings.
• Tiles and Slates: These materials require flexible and breathable coatings to handle temperature changes and moisture.

Professional Application Methods

Certain roof coatings and applications are best handled by professionals:

• Two-Pack Paints: Require precise mixing and application to ensure durability and performance.
• Large-Scale Projects: Large commercial roofs or industrial estates benefit from professional application to ensure even coverage and adherence to safety standards.
• Specialised Coatings: Anti-corrosive and elastomeric coatings often need professional expertise for optimal results.

Benefits of Cleaning and Maintenance

Regular cleaning and maintenance of your roof are essential for several reasons:

• Prevents Build-Up: Removes debris, moss, and algae that can retain moisture and damage the roof.
• Extends Lifespan: Regular maintenance helps identify and address minor issues before they become major problems.
• Improves Performance: Clean roofs perform better, with coatings adhering more effectively and providing optimal protection.

Cold/Winter Month Application

Applying roof paint during cold or winter months requires special considerations:

• Product Selection: Choose paints that can be applied at lower temperatures. Many Rust-Oleum and Teamac products are designed for cold weather application.
• Surface Preparation: Ensure the surface is dry and free from frost or ice before application.
• Application Techniques: Use heaters or tarpaulins to create a suitable environment for the paint to cure properly.

Roof Paint FAQs

What is roof paint and why should I use it?

Roof paint is a specially formulated coating designed to protect and enhance the appearance of your roof. It provides a barrier against harsh weather conditions, UV radiation, and helps to prevent moss and algae growth. Using roof paint can extend the lifespan of your roof, improve energy efficiency by reflecting sunlight, and increase the aesthetic appeal of your property.

What types of roof paint are available in the UK?

In the UK, the main types of roof paint available include acrylic-based roof paint, elastomeric roof paint, and bitumen-based roof paint. Acrylic-based paints are popular for their durability and UV resistance, elastomeric paints offer excellent flexibility and waterproofing, and bitumen-based paints provide strong protection against water and harsh weather conditions.

How do I choose the right colour for my roof paint?

When choosing the colour for your roof paint, consider factors such as the architectural style of your home, local climate, and neighbourhood aesthetics. Lighter colours can reflect more sunlight, helping to keep your home cooler in the summer, while darker colours can provide a traditional look and hide dirt more effectively.

Can I paint my roof myself, or should I hire a professional?

While it is possible to paint your roof yourself, it can be a challenging and potentially dangerous task. Hiring a professional ensures that the job is done safely and correctly, with proper surface preparation and application techniques. Professionals also have access to high-quality materials and equipment, which can result in a longer-lasting finish.

How long does roof paint last?

The longevity of roof paint depends on several factors, including the type of paint used, the quality of the application, and environmental conditions. On average, roof paint can last between 5 to 10 years. Regular maintenance, such as cleaning and inspecting the roof, can help extend the lifespan of the paint.

What is the best time of year to paint my roof in the UK?

The best time to paint your roof in the UK is during the late spring to early autumn months when the weather is typically dry and mild. Avoid painting during rainy or extremely hot conditions, as these can affect the paint's adhesion and drying time.

Will roof paint affect the insulation of my home?

Roof paint can improve the insulation of your home by reflecting sunlight and reducing heat absorption, particularly if you choose a reflective or lighter colour. This can help keep your home cooler in the summer and reduce energy costs.

How do I prepare my roof for painting?

Proper preparation is crucial for a successful roof painting project. Start by cleaning the roof thoroughly to remove dirt, moss, and algae. Repair any damaged areas, such as cracks or loose tiles. Apply a suitable primer if necessary, and ensure the surface is dry and clean before painting.

Are there eco-friendly roof paint options available?

Yes, there are eco-friendly roof paint options available that use low VOC (volatile organic compounds) formulas and water-based solutions. These paints are better for the environment and your health, while still providing excellent protection and durability.

How much roof paint will I need?

The amount of roof paint you need depends on the size of your roof and the type of paint being used. Most paint manufacturers provide coverage estimates on their product labels. As a general rule, one litre of roof paint covers approximately 6-10 square metres, but it's best to check the specific product guidelines and measure your roof accurately.

Can roof paint help prevent leaks?

While roof paint itself is not a replacement for proper roof repairs, certain types of roof paint, such as elastomeric or bitumen-based paints, can provide a waterproof barrier and help prevent minor leaks. It's important to address any significant damage or structural issues before applying paint.

Is roof paint suitable for all types of roofs?

Roof paint is suitable for many types of roofs, including tile, slate, metal, and asphalt shingles. However, it's essential to choose the right type of paint for your specific roof material. Always check the manufacturer's recommendations to ensure compatibility.

How do I maintain my painted roof?

To maintain your painted roof, regularly clean it to remove debris, moss, and algae. Inspect the roof for any signs of damage or wear and touch up the paint as needed. Keeping gutters clean and ensuring proper drainage will also help maintain the integrity of the paint and roof structure.

Can roof paint improve the value of my home?

Yes, painting your roof can improve the curb appeal and overall appearance of your home, potentially increasing its value. A well-maintained and visually appealing roof can make your property more attractive to potential buyers.

Are there any building regulations or permissions needed for painting my roof in the UK?

Generally, you do not need planning permission to paint your roof in the UK, but it's always best to check with your local planning authority. If you live in a listed building or a conservation area, there may be specific regulations or restrictions you need to adhere to.

For more information on roof paints and waterproofing solutions, contact our experts for personalised advice. Our extensive range of products from leading brands like Rust-Oleum, Britannia, Cromar, Teamac, and Kovertek ensures that you have everything you need to maintain and protect your roof effectively. Whether it's new build projects, repair work, or renovation and restoration, we provide the expertise and products to achieve long-lasting and professional results.

If you have a question which has not been covered in these FAQs, or have a specific project requirement, please use the search option on the site, this category’s sidebar filter or sub-category links, or contact our Technical and Product Support Team by phone, email or live chat.

What Rawlins’ Customers Say:

Don’t just take our Technical Support Teams’ words for it, here’s what our customers have to say about roof paint they have purchased from our store:

(Eagle Ultraflex Waterproof Roof Coating) excellent product, underpinned by Nick (in Technical) who was very helpful in the lead up to ordering. Top man. Customer feedback from David H on Trustpilot

Best products (Eagle Desmopol Liquid Polyurethane Membrane) on the market. Customer feedback from Grant H on Trustpilot

Very satisfied with promp delivery and excellent product (Eagle Aquapol Acrylic Roof Coating). Will recommend it. Thanks, I have a dry shed. Customer feedback from Kenneth J on Trustpilot

(Rust-Oleum Mathys Fillcoat Fibres) sorted out my guttering problem brilliantly. Customer feedback from Dermot W. on Trustpilot

The information provided above is a basic overview and is intended as general information only. It is not advice, and is given without warranty. You should always refer to the relevant data sheets and our Technical Team prior to purchase or use of any products.