Flat Roof Repair

When we’re called out for a flat roof repair job, we assess whether a repair is the most cost effective option as sometimes it might be a better idea to completely renew the roof itself, as damage to the woodwork underneath flat roofs could lead to more cost in the long run.

This typically depends on how long the leak has been letting moisture in – so don’t delay in getting in touch if you’ve spotted a leak.

Here are some typical flat roof faults that result in leaks:

  • Felt not being bonded correctly
  • Holes in the roof, made by birds etc.
  • Bad workmanship.
  • General wear and tear.
  • Storm damage.

The average life expectancy of a typical flat roof is about 20 years, but this is improving as roofing tech gets better. This obviously depends on the material used, and we’re always happy to advise you on the best material for your specific roofing requirements.


The timescale for repairing flat roofs depends on the size and detail – a typical single garage timescale would be around 2/3 days, weather dependent.


For a typical flat, felt roof, we’d start by remove all old felt, and the timber boards depending on their condition.

We’d then replace the timber as necessary.

Next, we torch on 1 layer of 2ml underlay , then torch on 1 layer of 4ml green mineral.

We then fit 4ml green mineral, torch on drips, and depending on edging – possibly add aluminium trim to give the look of a new garage.

We also fit lead flashing where necessary to ensure a watertight fit.

For all types of flat roof repair, including asphalt, felt and fibreglass – give us a call – we’ll be happy to assist.

Frequently Asked Questions

Do you do insurance work/repairs?

Yes – we’ve worked with all major house insurers and are happy to undertake this type of work.

Do you supply written quotations?

Detailed written quotations are supplied and agreed before work commences.

Do you do structural work?

Yes – all aspects of roof repair, from the roof truss makeup to the slate/tiles/felt on the roof.

How long will it take?

Factors include, the condition of the existing roof, its age and its size. Some repairs can be completed in a day, others take much longer depending on the complexity of the job – we’ll do our best to give you an estimate before the job starts, but please bear in mind a lot of the work is weather dependent!

Do you guarantee your work?

Yes – all the work is guaranteed (parts and labour) – the length of the guarantee depends on the roofing material you choose, as each has a different expected lifespan:
12 years for felt roofs
15 year guarantee for tiled roofs
20 years for slate roofs
(Please note we don’t include storm damage in our guarantee)

Any claims made to guarantees given will require a hard copy to be shown before any works will be carried out. It is the customer’s responsibility to keep these guarantees safe. Shepherd Roofing and Slating will not be responsible for providing duplicate hard copies.

Can you match my existing roof tiles/felt/slate?

Yes – we can match almost any existing roof material.
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