Summer is one of the best times of year to install or repair a flat roof. Longer daylight hours, warmer temperatures, and drier weather can all help speed up installations and improve product performance. Whether you’re working with EPDM rubber roofing, single ply membranes, or liquid roofing systems, preparation and correct installation techniques are essential during hot weather.

Here are some important summer roofing do’s and don’ts to help you get the best results on your next flat roofing project.

Why Summer Is Popular for Roofing Projects

Warm weather creates ideal conditions for many roofing products to bond, cure, and perform properly. Adhesives activate more effectively, membranes become easier to handle, and liquid coatings cure faster in dry conditions.

However, excessive heat can also create problems if materials are not stored or installed correctly.

The Do’s of Summer Flat Roofing
1. Start Early in the Day

Roof surfaces can become extremely hot during the afternoon sun. Starting work early helps avoid overheating materials and allows installers to work more comfortably and safely.

This is especially important when installing:

• EPDM rubber roofing
• Single ply membranes
• Liquid roofing systems
• Roofing adhesives and primers

2. Store Materials Correctly

Always keep roofing materials out of direct sunlight where possible.

This can cause:

Best practice:

• Store adhesives in cool shaded areas
• Keep EPDM membranes rolled until needed
• Protect single ply membranes from excessive heat build-up
• Avoid leaving liquid roofing products in hot vans or direct sun

Correct storage helps maintain product performance and prevents premature curing or adhesive thickening.

3. Keep the Roof Surface Clean and Dry

All flat roofing systems rely on good adhesion.

Before installation:

• Remove dust and debris
• Ensure surfaces are completely dry
• Check for standing water
• Clean old substrates thoroughly

This is particularly important for liquid roofing applications where contamination can affect curing and waterproofing performance.

4. Allow Materials to Acclimatise

EPDM and single ply membranes become more flexible in warmer temperatures. Allowing them to relax before fixing can reduce wrinkles and improve installation quality.

For liquid roofing, always follow manufacturer guidance regarding surface temperature and curing conditions.

5. Stay Safe and Hydrated

Flat roofs absorb a large amount of heat during summer.

Remember to:

• Wear appropriate PPE
• Take regular water breaks
• Use sun protection
• Avoid prolonged exposure during peak heat

Safety should always come first on roofing projects.

The Don’ts of Summer Roofing

1. Don’t Install on Overheated Surfaces

Very hot roof decks can affect adhesives, membranes, and liquid coatings.

Excessive surface temperatures may:

• Cause adhesives to flash off too quickly
• Create bubbling in liquid systems
• Reduce workable time
• Affect membrane positioning

If surfaces become too hot, allow them to cool before installation.

2. Don’t Leave Adhesives Open Too Long

Warm weather accelerates evaporation and curing times.

Whether using:

• EPDM bonding adhesive
• Contact adhesive
• Single ply adhesives
• Liquid roofing resins

Always work in manageable sections and avoid leaving products exposed for extended periods.

3. Don’t Rush Seam Work

Summer heat can tempt installers to work faster, but seams remain one of the most important areas on any flat roof.

Take extra care when:

• Rolling EPDM seams
• Welding single ply membranes
• Applying reinforcement fleece
• Detailing liquid roofing edges and upstands

Good detailing prevents future leaks and extends roof lifespan.

4. Don’t Ignore Expansion and Movement

Warm weather causes roofing materials to expand.

Ensure:

• Membranes are correctly positioned
• Expansion allowances are followed
• Edge trims are securely fixed
• Drainage remains unobstructed

This is particularly important on larger flat roofing installations.

5. Don’t Forget Drainage Checks

Summer is the perfect time to inspect drainage before autumn and winter arrive.

Check:

• Outlets and drains
• Gutters and trims
• Water flow direction
• Ponding areas

Proper drainage is essential for all flat roofing systems including EPDM, single ply, and liquid roofing.

Choosing the Right Flat Roofing System

Different roofing systems offer different advantages depending on the project.

EPDM Roofing

• Durable and flexible
• Excellent weather resistance
• Ideal for residential flat roofs

Single Ply Roofing

• Lightweight and modern
• Fast installation
• Popular for commercial projects

Liquid Roofing

• Seamless waterproof finish
• Excellent for detailing and repairs
• Great for complex roof shapes

Get Ready for Summer Roofing with The Roof Store

At The Roof Store, we supply everything you need for summer flat roofing projects including:

• EPDM roofing systems
• Single ply membranes
• Liquid roofing products
• Roofing adhesives
• Edge trims and drainage
• Roofing tools and accessories

Whether you’re a professional roofer or tackling a DIY project, our team can help you find the right products for the job.

Shop online today at www.theroofstore.co.uk