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TJM Home Improvements
A finished felt flat roof with a glass lantern rooflight set into it

Flat Roofing - Greenford UB6

Flat Roofing in Greenford

Extensions, dormers, garages and outbuildings, re-covered to shed water. Covering Greenford and Ealing, Southall, Acton.

Get a free quote020 7649 9008

Ask about flat roofing in Greenford

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The work

Flat Roofing for Greenford homes

Greenford is a short run for us, so a look at a flat roofing job here is a visit rather than a day of travel priced into the quote. We work across UB6 and out into Ealing, Southall, Acton, Perivale, Wembley.

Almost every failed flat roof we look at has the same two problems: no fall, so water sits, and no insulation upgrade, so the deck stays cold and sweats. Ponding then finds the weakest lap, and the ceiling below tells you about it.

We rebuild flat roofs from the deck up. Firrings or a tapered scheme set the fall, insulation goes in to current standards where the build-up allows, and the covering is chosen to suit the roof: high-performance felt, EPDM rubber, or fibreglass where the detailing is complicated.

Get a quote for flat roofing in Greenford020 7649 9008
A flat roof membrane being torched down along a joint

What's included

What flat roofing covers

  • Strip and deck

    Old covering removed, deck inspected, and soft or delaminated boarding replaced.

  • Falls

    Firrings set so water actually runs to the outlet instead of sitting in the middle.

  • Insulation

    Upgraded within the build-up where head height and detailing allow.

  • The covering

    Torch-on felt, EPDM rubber or GRP fibreglass, matched to the roof and the budget.

  • Edges and outlets

    New trims, drips and outlets so the water leaves the roof cleanly.

  • Upstands and abutments

    Dressed and flashed where the flat roof meets a wall or a pitched roof.

The options

Flat Roofing in Greenford: which system

We fit all of these across Greenford. Which one suits depends on the roof you have, the span, and what you want out of it - so here is the honest difference between them.

Felt (torch-on built-up)

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.

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.
A torch-on felt flat roof with mineral cap sheet and dressed upstands

EPDM rubber

EPDM is a synthetic rubber membrane supplied in wide sheets. On a typical garage or extension roof it goes down as one piece, bonded to the insulation or deck, with the edges dressed into trims and taken up the abutments.

It stays flexible in cold weather, it is not degraded by ultraviolet light the way old felt was, and because there are no joints in the middle of the roof there is nothing there to fail. Corners and outlets are made up with matching flashing pieces.

Single-sheet membrane
EPDM cut to the roof and bonded down, in one piece wherever the roof allows.
Corners and penetrations
Pre-formed corners and pipe flashings bonded and rolled.
A single-piece EPDM rubber membrane bonded to a flat roof deck

Fibreglass (GRP)

A GRP roof is glass matting laid onto a prepared deck and saturated with resin, then finished with a pigmented topcoat. Because it cures as one shell there are no laps and no joints, and it bonds around upstands, kerbs and outlets rather than being dressed over them.

That makes it the covering to choose where a roof is walked on, where there are lots of penetrations, or where a balcony has to be watertight over a habitable room. It needs a dry, sound, correctly boarded deck to go onto, so preparation is most of the job.

Laminate and topcoat
Glass matting and resin laid to the specified weight, then a pigmented topcoat in your colour.
Balcony detailing
Upstands, thresholds and drainage outlets formed into the laminate.
A fibreglass GRP flat roof finished with a grey anti-slip topcoat

The process

How a flat roofing job runs in Greenford

  1. Step 01

    Get on the roof

    We check the deck by walking it and looking underneath, so the quote reflects the real condition.

  2. Step 02

    Recommend a system

    Felt, rubber or fibreglass, with the reason for the recommendation and the price of each.

  3. Step 03

    Strip and rebuild

    Deck sorted, falls formed, insulation and covering laid in one continuous run of work.

  4. Step 04

    Check and clear

    Outlets tested, trims finished, and the old covering taken away.

Get a free quote020 7649 9008

Next step

Get a price for flat roofing in Greenford

Send the form or ring 020 7649 9008. We will come and look at what you actually have, then put a figure in writing.

Get a free quote020 7649 9008

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.

Reviews on MyBuilderOur Instagram

Why TJM

Why Greenford customers use us for this

  • Falls are formed properly, which is what actually stops a flat roof failing.
  • Deck repairs are shown to you before they get covered up.
  • Three systems offered, so you are not sold whichever one we happen to prefer.
  • Extension and dormer roofs detailed into the main roof, not butted up against it.
Get a free quote020 7649 9008
A small flat roof over a rear extension

The price

Flat Roofing costs

What flat roofing 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.

Get a price020 7649 9008
  • Area, and how much of the deck needs replacing.
  • The covering: felt, EPDM and GRP each price differently.
  • Insulation thickness, and whether upstand heights allow it.
  • The number of upstands, outlets and abutments to detail.

On the job

Flat Roofing across Greenford

We cover Greenford UB6 and the streets around it - Ealing, Southall, Acton, Perivale, Wembley - so most flat roofing jobs here are a short journey rather than a day of travel priced into the quote.

If your job crosses into another trade, that is still one price and one person responsible for the order the work happens in. Roofing, brickwork, render and groundwork are all done in house.

  • Falls are formed properly, which is what actually stops a flat roof failing.
  • Deck repairs are shown to you before they get covered up.
  • Three systems offered, so you are not sold whichever one we happen to prefer.
Get a free quote020 7649 9008
A new felt flat roof looking out over a West London back garden

Questions

Flat Roofing in Greenford: common questions

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.

020 7649 9008tjmhomeimprovements@gmail.com

How long should a flat roof last?

A modern torch-on felt or EPDM roof laid with correct falls should be a twenty-year-plus covering. The ones that fail in five are almost always ponding, so the fall matters more than the brand of membrane.

Can you just patch it?

If the covering is otherwise sound and the fault is one lap or one outlet, yes, and we will say so. If the roof is ponding and blistered across the whole area, patching buys a season at best.

Which is better, rubber or felt?

EPDM rubber goes down in one sheet on a simple rectangle, which is a real advantage. Felt is easier to detail around awkward shapes and simple to repair later. We pick based on the shape of your roof.

How much fall does a flat roof need?

Current guidance is a finished fall of at least 1 in 80, which in practice means designing to 1 in 40 so deflection and workmanship do not eat it. A roof with no measurable fall is the commonest reason a flat roof fails early.

Can an existing flat roof be insulated?

Usually, and a re-cover is the moment to do it. The limit is upstand height: insulation raises the finished level, so door thresholds and abutment flashings still have to work afterwards. We check that before quoting.

Looking for a service other than Flat Roofing in Greenford UB6?

We cover the whole outside of the house for our Greenford customers:

Not in Greenford? Still looking for Flat Roofing near you?

We also cover Northfields, Feltham, Acton, Hampton, Isleworth and more:

We also provide flat roofing to Ealing, Southall, Acton, Perivale and the streets around them.

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