How Often Should a Flat Roof Be Inspected?
Twice a year is the working answer for a flat roof, and the useful part is which two visits and what each one has to cover. The autumn one prevents more damage than the spring one.
Read the guideKnowledge
Roofing guides in plain English
Straight answers to the questions we get asked on site, written by the team that does the work. No jargon, no sales pitch, and no invented numbers.
All guides
Every guide we have written
Each one answers a question we get asked on site often enough to be worth writing down properly.
How to Read a Roofing Quote
Three quotes for the same roof can differ by a factor of two and all be honest, because they are pricing different work. Here is how to find out what each one has actually assumed.
Read the guideRoof Terrace and Balcony Waterproofing
A deck in a garden lets water through and nothing happens. A deck over a bedroom lets water through and something happens. Everything about the specification follows from that one difference.
Read the guideRoofing in a London Conservation Area: What You Can and Cannot Do
A conservation area does not stop you repairing your roof. It changes what the roof is allowed to look like afterwards, and in some London boroughs you cannot check where you stand without asking the council.
Read the guideCommercial Flat Roof Maintenance: Keeping Tenants In During Works
On a commercial building the roof is rarely the expensive part. The disruption is. Here is how a maintenance regime and a cold-applied refurbishment keep tenants trading while the work happens above them.
Read the guideHow to Tell If a Flat Roof Leak Is the Roof or Something Else
Water showing on a ceiling below a flat roof is not proof that the roof is leaking. Four other things produce the same stain, and one of them costs nothing to fix. Here is how to tell them apart before you pay anybody.
Read the guideFlat Roof Repair or Replacement: When a Roof Can Be Sealed Instead of Stripped
The question almost every flat roof owner asks first. Here is what actually decides it, what a surveyor is checking for, and the four situations where replacement is the only honest answer.
Read the guideParapet Walls and Coping Stones: Why South London Terraces Leak
A damp patch at the top of an upstairs wall on a Victorian terrace usually has nothing to do with the roof covering. It is the parapet, and it is the single most common leak we are called to across South London.
Read the guideFelt, GRP, EPDM or Asphalt: Which Flat Roof Do You Have?
Before anyone can tell you what your flat roof needs, you both have to know what it is made of. Here is how to recognise the five common coverings by sight, and what each one means for the choice between overlaying and stripping.
Read the guideWhat ETA-23/0735 Certification Means for Your Flat Roof
The certification number behind the system we apply, explained for building owners rather than specifiers. What it covers, who issues it, and how to check that whoever quotes you is actually approved to install it.
Read the guideWhat Is Liquid Roofing? A Plain English Guide
Liquid roofing is sold under a dozen different names, and the gap between the cheapest and the most expensive is enormous. Here is what it actually is, in plain English, and how to tell the two apart.
Read the guidePonding Water on a Flat Roof: How Serious Is It?
You have looked at your flat roof after rain and found a puddle that is still there days later. Here is when that is genuinely normal, when it is a warning, and what actually fixes it.
Read the guideFree on-site estimate
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