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TJM Home Improvements
A torch-on felt flat roof running up to a glass lantern, with the house behind

Felt Roofs

Felt roofing

Torch-on high-performance felt, laid in layers with staggered laps.

Ask about felt roofs

Tell us what is happening and we will come and look.

The work

Torch-on felt, laid in layers

Modern roofing felt is a polyester or glass reinforced bitumen membrane, torched down in two or three layers. Each layer breaks the joints of the one below, so there is no single lap for water to follow through the build-up.

It is a good choice on a roof with lots of penetrations, upstands and changes of direction, because it can be dressed into a detail rather than pieced around it. It is also the easiest covering to repair in ten years time.

  • Two and three layer systems, never a single cap sheet on its own.
  • Upstands taken to full height rather than stopped short.
  • Hot works handled with the care a lived-in house needs.
  • Straightforward to repair later, which keeps future costs down.
Torch on felt being bonded to a flat roof deck

Why TJM

Why customers choose us

  • A family-run business that has built up an enviable reputation across West London.
  • Over 25 years of experience on roofs, roofline, brickwork and the ground around the house.
  • High standards on every job, whatever its size, from a slipped tile to a full re-roof.
  • Affordable pricing, with the figure in writing before any work starts.
  • Our goal is to meet and exceed the expectations of every customer.
Felt being torched along a lapped joint

What's included

What felt roofs covers

  • Vapour control layer

    Laid to the deck so moisture from inside does not reach the insulation.

  • Insulation board

    Bonded down, cut to the falls, and sized for the upstands you have.

  • Underlay and cap sheet

    Two or three layers torched with staggered laps, mineral finish on top.

  • Upstands and skirts

    Dressed at least 150mm up abutments, then tucked or flashed in.

  • Trims and outlets

    Aluminium drip and edge trims, and new outlets where the old ones have perished.

The price

Felt Roofs costs

What felt roofs costs comes down to what you actually have, not a price list. Two jobs that sound identical can be an hour of work or a week of it, which is why we do not price roofing over the phone. We come and look, then put a figure in writing.

  • Area, and the number of layers specified.
  • How much deck and how many outlets need replacing.
  • Length of upstand and number of abutments.
  • Access for materials and for waste removal.

Next step

Get a price for felt roofs

Send the form or ring us. We will come and look at what you actually have, then put a figure in writing.

Our work

Read the reviews, then look at the jobs

What customers have said about the work, collected from the places they left it.

Read customer feedback straight from our MyBuilder profile, where every review is tied to a job we were hired for, and see finished work on Instagram as it comes off the scaffold.

How it works

How a felt roofs job runs

  1. Step 01

    Survey the existing roof

    Deck condition, falls and upstand heights all decide the build-up.

  2. Step 02

    Quote the build-up

    The quote names the layers, so you know whether you are getting two or three.

  3. Step 03

    Strip and lay

    Hot works are managed carefully and the roof is watertight before we leave each day.

  4. Step 04

    Check and hand over

    Laps, upstands and outlets checked over, photographs sent to you.

Questions

Felt Roofs: common questions

The questions we get asked most often about this work. Anything else, ring and ask.

Still not sure? Ring and ask. It is usually quicker than typing it out, and you will speak to the person who would do the work.

Is felt not the old-fashioned option?

The felt that gave the material its reputation was a different product. Torch-on high-performance felt is reinforced, laid in layers, and is a mainstream commercial covering. The bad ones you have seen were usually laid flat with no fall.

Can felt be laid over my existing roof?

Occasionally, if the existing covering is sound, dry and has fall. More often overlaying traps water in the old build-up, so we would rather strip it and see the deck.

Will there be a smell or a fire risk?

Torching produces a bitumen smell for the day, and it does need care around timber and openings. We manage hot works with the right kit and keep clear of anything combustible.

How long does a torch-on felt roof take to lay?

A typical garage or extension roof is one to two days once the old covering is off, weather allowing. Felt cannot go onto a wet deck, so a damp week can push it back.

Can felt be repaired later?

Yes, easily, and that is one of its real advantages. A damaged area is cleaned back and a new patch torched in so it bonds to the existing cap sheet, which means a repair never turns into re-covering the roof.

Where we work

Roofers across West London

We work across the west London boroughs and the towns along the river. If you are just outside the list, ring and ask. We will tell you straight whether it is a journey we can make work.

  • Ealing
  • Northfields
  • Acton
  • Chiswick
  • Shepherds Bush
  • Fulham
  • Hounslow
  • Kew
  • Richmond
  • Twickenham
  • Hampton
  • Kingston
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