Flat Roof Repairs · Addiscombe CR0
Flat Roof Repairs In Addiscombe
Is the roof nobody can see from the street the one letting water into your Addiscombe house?
Repairs to valley gutters, back addition roofs and lean-tos behind Addiscombe's slate fronts
From Lower Addiscombe Road you see slate, chimneys and bay windows. You do not see the back of the house, and that is where most of the flat roofing on an Addiscombe terrace lives. Behind the front slope there may be a butterfly roof draining into a central gutter, a lean-to over the kitchen, a flat top on the back addition, or all three, each one patched by whoever owned the house at the time. On Clyde Road, Canning Road and the streets around Chatsworth Road the houses are Victorian and Edwardian, built close together and often split into flats. So the roof that leaks is frequently one you cannot reach without going through somebody else's home, and one you may only own a share of.
Flat Roof Repairs quote in Addiscombe
Four details and somebody will come and look at it. There is no charge for the visit, no obligation afterwards, and if the answer is that your roof is fine, that is what you will be told.
The people behind it
Two people who both know your back roof
A flat roof tucked behind an Addiscombe terrace is easy to lose track of, especially when several owners have a say. The family behind Roof Repairs Croydon is two brothers, John and Mark, and on a job like this they usually work out the price together.
That gives you two points of contact, and both of them know where things stand. Ring while one of them is busy on a roof and the other can usually pick up the thread. Customers tell them it makes a refreshing change.
1,000+
Roofs put right
10 year
Written workmanship guarantee
£0
To have somebody come and look
Repair first
Replacement is the last resort
What a failing back roof looks like from inside an Addiscombe house
You rarely see these roofs, so the first clue is usually indoors. Where the water shows up says a lot about which roof let it in.
A stain in the middle of a top-floor ceiling, well away from any wall
On a house with a butterfly roof, that spot sits right under the central valley. Water backs up when the outlet through the rear parapet blocks, then finds a crack in old lead or felt. The front slope is rarely involved.
Water dripping into the kitchen after heavy rain
The lean-to or back addition roof, usually at its junction with the main house wall. These small roofs take the run-off from the bigger slope above them, so that joint gets far more water than the roof itself.
A puddle on the back addition that is still there days later
The deck has sagged between old joists, or the roof was laid almost level in the first place. Felt left sitting under water ages quickly and starts to split along its laps.
Damp creeping down the party wall near the back of the house
Back roofs on neighbouring terraces often meet at a shared parapet or gutter. A blocked outlet or failed flashing next door can show up on your side, which is why we look past your boundary as well as at your own roof.
How we handle flat roofs on Addiscombe terraces
The back roof gets stood on
We don't price from the pavement. Somebody goes up onto the valley or the lean-to, because that is the only way to see what has actually failed.
Parapet outlets cleared and measured
A butterfly roof drains through one small hole at the back. We clear it, check its size and the lining around it, and tell you if it simply cannot cope.
Written for every owner
Where the building is divided into flats, the report sets out cause, extent and price in a form every leaseholder can follow, so one owner isn't left arguing the case alone.
Conservation rules checked before materials
Inside the Chatsworth Road area we confirm whether the repair stays like for like before anyone suggests a different covering.
The deck tested, not assumed
Old boards behind a terrace have often been wet for years. We probe them and lift a section where needed, then price what we find.
Ten years on paper
Our written workmanship guarantee comes with the finished job, along with photos of a roof you probably can't see from the ground.
Why Addiscombe's back roofs give more trouble than its front slopes
The terraces here went up from the 1860s into the Edwardian years. The front of each house got a proper pitch and Welsh slate, which sheds water fast and lasts. The shallow roofs behind it are a different matter. A butterfly valley or a lean-to runs at a low angle, so water moves slowly, leaves settle and silt builds up into a damp layer that never quite dries. After a century of patching, the lead, felt and mastic on a single back roof can come from four or five different decades.
Ownership adds its own twist. Many of the bigger houses are now flats, so a back roof may sit over one flat, belong to the freeholder and be reachable only through another flat's window. Repairs get put off while the owners work out who pays, and a small split turns into a wet ceiling. On a shared parapet, the gutter you clear may be draining your neighbour's roof as well as yours.
"From what we see on terraces like these, the flat roof that leaks is often one the owner has never stood on, and now and then one they did not know they had."
From flat roof repairs enquiries in Addiscombe handled by Roof Repairs Croydon
How an Addiscombe flat roof repair runs
Tell us which ceiling is wet
Top floor in the middle, back bedroom or kitchen? Where the stain sits usually tells us which of the back roofs to look at first.
Free visit, front and back
We glance over the slate slope, then get onto the valley or lean-to by ladder from the garden or out of a window, whichever is safe. The loft gets a look too.
Trace the water
We follow the route from the outlet back up the valley, check laps and upstands, and press the deck for soft areas. Photos are taken as we go.
One written price you can share
Repair and re-cover set out separately, with access and any new boards as their own lines. If there are several owners, it is written so they can all follow it.
Repair or re-cover
Failed material stripped to a sound edge, wet boards replaced, falls improved where the joists allow, and the outlet dressed so water leaves the roof instead of waiting at the parapet.
Check and hand over
If it's safe to, we tip a bucket of water down the valley and watch it leave through the outlet. Then you get photos of the finished work and your ten year guarantee, in writing.
The 10 year guarantee, and why it is safe to offer
Promising a roof will stay dry is easy. What counts is what happens if it does not. Work booked through Roof Repairs Croydon carries a 10 year workmanship guarantee, on paper, handed to you on the day and written in language you can actually read. The slates, tiles, lead, mortar, membranes and rainwater goods carry their own manufacturer cover on top of that. It varies by product, so you get told which cover applies to your job rather than one headline number that would be wrong on most of them.
Here is the reason a guarantee like that is not a risk. Repairs come back for one reason above all others: the fault was never found in the first place. Somebody went up, saw a stain on the ceiling below, mended whatever looked worst directly above it, and left. Water does not cooperate with that approach. It lands on a slate, runs under it, drops onto a rafter and travels along the rafter before it finds anywhere to fall. On a wide hipped roof in Sanderstead or Shirley that can be five metres from where it came in.
Find the entry point and the repair holds for years. Miss it and no amount of guarantee wording helps anybody. That is why the survey happens before the price, and it is why, if the same water finds its way back into your house inside the guarantee period, putting it right costs you nothing.
10 year
Workmanship guarantee
1,000+
Roofs put right
Covered
Public liability insurance
Per product
Maker's own warranty
Three questions for anyone quoting on an Addiscombe back roof
Have they actually been on it?
A quote written from the street sees slate and nothing else. Ask what they found in the valley or on the lean-to, and ask for a photo.
What happens to the outlet?
On a butterfly roof the parapet outlet decides everything. Re-covering the valley but leaving an undersized or cracked outlet in place leaves the cause untouched.
Do they know whether you're in the conservation area?
Inside Chatsworth Road, swapping lead for rubber or felt for fibreglass can need permission. A roofer who hasn't asked may hand you a planning problem along with the invoice.
Patch the back roof or re-cover it?
On an old terrace the answer depends on what is under the covering. This is how the two options usually line up on an Addiscombe valley or back addition.
| Comparison point | Local repair | Strip it and start again |
|---|---|---|
| Suits | A single split or failed lap | A covering patched many times over |
| Deck | Left alone if dry | Every soft board renewed |
| Outlet | Cleared and resealed | Rebuilt or enlarged where needed |
| Chatsworth Road | Like for like, no application | Permission if the material changes |
| Access | Often a ladder or a window | May need a tower in the side return |
| Cost | Lower | Higher, and longer lasting |
If the stain is beside the chimney breast
Terrace stacks sit right next to many of these back roofs, and a tired stack can wet the same back bedroom. Before you blame the valley, have a look at our page on chimney repairs in Addiscombe. Both get checked on the same visit if you ask.
What flat roof repairs cost in Addiscombe
On these terraces most of the price comes from getting to the roof and finding out how long it has been wet. The covering itself is often the smaller part.
Reaching the back roof
A lean-to off the garden is simple. A butterfly valley behind a parapet off Clyde Road or Canning Road may need a tower carried through a narrow side return, or access through an upstairs flat.
How long the deck has been wet
Old joists and boards under a leaking valley can be sound or soft right through. We price the boards we can see are bad and tell you what each extra one costs.
Materials around Chatsworth Road
Inside the conservation area, matching what is already there is often the only route without an application, and traditional materials such as lead cost more than modern membranes.
Flat Roof Repairs in Addiscombe: questions
Is planning permission needed for flat roof work in Addiscombe's Chatsworth Road conservation area?
For a like-for-like repair, no. Addiscombe falls within the London Borough of Croydon. The Chatsworth Road conservation area has had an Article 4 direction since January 2016, and under it any alteration to the roof of a dwelling house needs planning permission. Repairing in the same material is fine. Changing the covering, for example from lead or felt to rubber or fibreglass, counts as an alteration, so speak to Croydon Council before agreeing to it. Anywhere in Addiscombe, renewing over 25% of a roof can also bring building regulations into play, mainly over insulation.
Why does the butterfly roof on my terrace keep blocking?
Its shape. Two shallow slopes run inwards to a narrow gutter, which drains through a single outlet in the rear parapet. Leaves, moss off the slates and grit blown up from the street all end up there. Once the outlet is partly blocked the valley fills and water climbs over the edge of the lining. Clearing it twice a year helps. An outlet that is too small for the roof needs enlarging.
Can you get onto the back roof of an Addiscombe terrace without scaffolding?
Usually. A lean-to or back addition can often be reached by ladder from the garden. A butterfly valley behind a parapet is harder, and we may need a short tower, or to climb out of a top-floor window where that is safe. On a converted house that window may belong to another flat, so it helps if the owners are in touch before the visit. We confirm access on the free survey.
Should the lead in my valley gutter be replaced with something cheaper?
Outside the conservation area it can be, and GRP or a single-ply membrane are both used to reline valleys. Lead lasts a long time when it is laid in short enough lengths, and plenty of old valleys failed because one long sheet cracked as it expanded and shrank. Inside Chatsworth Road, switching material is a change of covering and needs permission first. We will tell you which way we would go on your roof, and why.
How do I know if the leak is the flat roof or the slates above it?
Look at where the stain is and when it appears. A patch that turns up during heavy rain and dries within a day or two often points to the flat roof or its outlet. Damp that lingers near the top of a wall can come from slipped slates or failed nails on the slope above, with water running down onto the back roof. We check from the loft and from the roof before saying which.
What Croydon homeowners say
From roads across the borough, once the ladders had gone.
"Damp patch on our landing ceiling for about three years. Two roofers had been out and both mended the tiles directly above it, and neither made the slightest difference. This chap spent twenty minutes in the loft with a torch before he even went outside, then showed me a photo of a split in the lead in the valley about four metres away from the stain. Fixed it in a morning. Three winters on and nothing."
"Water was coming down the front bedroom wall every time it rained hard and I had convinced myself the roof was finished. It was the gutter. Half of it had dropped so the water was sitting in the middle and going over the front rather than down the pipe. He reset the brackets and cleared the gully, charged me a fraction of what I had budgeted for, and told me the roof itself had years left. Could easily have sold me a new one."
"Ours is in the Chatsworth Road conservation area and I had no idea the rules on roof work here are stricter than the rest of Croydon. He knew straight away, explained what I could and could not do without an application, and did the repair in matching slate. That saved me a very awkward conversation with the council later on."
"Lost most of the ridge tiles along the back in a February gale. Rang in the morning, sheeted the same afternoon so the weather could not get in, came back the following week when it was dry and rebedded the whole ridge properly. Sent me photos of everything for the insurance without me even asking. The bill was exactly what the quote said it would be."
"Gutters had been overflowing under the trees for years and the fascia behind them had gone soft. What I appreciated was that he explained why the timber had rotted rather than just quoting to replace it, and pointed out the new soffits needed vents or I would end up with condensation in the loft instead. Nobody had ever mentioned that to me before."
Had us out to your roof?
Two minutes writing a review does more for a small local firm than any amount of advertising, and it helps the next person in Croydon work out who to ring.
Things to do in Addiscombe
Three green spaces close to Addiscombe's terraces, for when the ceiling has stopped dripping.
Addiscombe Railway Park
The old Addiscombe branch line closed in 1997 to make way for the tram. Its route is now a footpath and cycleway between East India Way and Dalmally Road, planted by volunteers.
View on Google Maps - Addiscombe Railway Park
Park Hill Park
Park Hill Recreation Ground climbs to a brick water tower dating from 1867, and its walled garden holds a memorial garden to Cicely Mary Barker, who drew the Flower Fairies.
View on Google Maps - Park Hill Park
Ashburton Park
Croydon Corporation opened this park at the Woodside end in 1924, on land that belonged to an 18th-century house. A ruined chapel and a 19th-century lodge remain from its convent orphanage years.
View on Google Maps - Ashburton ParkAddiscombe on the map
From Penwortham Road we can be in Addiscombe in about 10 minutes. Planning and building control questions here go to Croydon Council, as the area sits within the London Borough of Croydon.
Areas we cover
Back roofs leak in much the same way all over the borough. Pick a town below for its own page.
Flat Roof Repairs by town
Wet ceiling at the back of an Addiscombe terrace?
Tell us which room and roughly where the stain is. We come out free, get onto the roof you can't see from the street, and give you a written price that every owner in the building can read.