Damp Proofing in Greater London

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Damp Proofing in Greater London

Extensions such as garage conversions will usually require additional damp proofing to be installed through the conversion, as the pre-existing garage typically has a single skin design for walls and floors, which was not built to conform to building regulations for habitable rooms. This damp proofing will need to be put into walls and floors. In addition, the roofing of the garage conversion will need water proofing. The damp proofing for the floor of the garage conversion will in most cases be achieved by by using a damp proof membrane. This membrane is available in either solid or liquid form. The damp proof membrane will be put down either on top of the pre-existing concrete floor, underneath the new floor, or as part of both, depending on if the floor will be a solid or a floating floor. In some garages, the walls have been damp proofed, but this might need to be updated as part of the conversion to be able to meet current building regulations. The walls will need to be damp proofed to be able to safeguard the brickwork from rotting slowly as moisture sets in. This can be performed by either making use of damp proof membranes, waterproof rendering, or cavity insulation, depending on the type of walls that are already present in the garage. Damp proofing is an important part of the building regulations that the garage conversion will need to comply with, therefore is it necessary to make sure that your garage conversion incorporates suitable damp proofing methods.

Average Damp proofing cost in Greater London

The average cost of Damp proofing is £1500. Costs vary based upon the materials and the organisation selected. The upper price range can be as high as £1725. The material costs are in general about £375

Average price per Damp proofing job in 2026

Avg. price low

Avg. price low
£1,125
Avg. price

Avg. price
£1,500
Avg. price high

Avg. price high
£1,725

£1900

£1425

£950

£475

£0

Prices based on actual Damp proofing costs for Greater London, as reported by local LeadsDoWork members.

Damp proofing installation cost in Greater London 2026

Labour cost £1,050
Material cost £375
Waste removal £75
Time frame: 3-5 days

Damp proofing searches in June 2026

Damp proofing Projects in Greater London in May 2026

318,117

Requests for quotations in Greater London in May 2026

0

Requests for Damp proofing quotations in Greater London in May 2026. 0% change from April 2026.

0

Requests for Damp proofing quotations in United Kingdom in May 2026. 0% change from April 2026.

Source: Numbers calculated based on the search volumes in major search engines

Damp proofing searches in counties near Greater London May 2026

Damp proofing near you

Greater London

The Greater London region has the second biggest population in the UK, just behind the South East. However, with the smallest land area of all 9 English zones, it comes with a large population density of 5,701 people per square kilometre; this is more than ten times of any other English region. London continues to increase in size over time, becoming increasingly industrialised. The City of London at the same time ranks as one of the most expensive urban centres on the planet, beside Tokyo and Moscow. For your household developments be sure to work with trustworthy firms and guarantee an excellent finish you will be proud of.

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Damp proofing pros in Greater London

MPC

2 review(s)
Based: in Brighton, BN2 6NN

Latest review

Libby S., BN1
27th January 2024
5

Building work | Damp Proofing in Brighton

Mark responded promptly to my enquiry and made an appointment to come and look at the issue in question very soon. He ar...

Tonbridge Construction and Damp-Proofing

1 review(s)
Based: in Tonbridge, TN9 2YR

Latest review

Andy L., TN12
3rd April 2015
5

Building work | Damp Proofing in Tonbridge

Very personable, honest and professional

Seal

4 review(s)
Based: in Chichester, PO209EA

Latest review

Sara W., RH15
16th January 2016
5

Building work | Damp Proofing in Burgess Hill

Still not had the quote sent to me :-(

Similar Customer Enquiries for Damp proofing in Greater London

30 May

Building work | Damp Proofing

Pinner - HA5

Enquiry from: Kiran M

Start Date: Immediate

Damp wall in daughter’s bedroom. Find and fix the issue

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26 Apr

Building work | Damp Proofing

Harrow - HA3

Enquiry from: Mukund V

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Quotation ***dground Massionnet dampening & condensation & general upgrading for the house.

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15 Apr

Building work | Damp Proofing

London - SW7

Enquiry from: Harriet S

Start Date: Immediate

tanking one bedroom wall, a hall way wall and a utility room wall. are you the property owner: relative of owner how many rooms do you need damp proofing: 3-4 rooms property type: other please call t...

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10 Apr

Building work | Damp Proofing

Mitcham - CR4

Enquiry from: Ope O

Start Date: Immediate

I want to Waterproof the flat concrete roof and damp proof the end of terrace wall.

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21 Mar

Building work | Damp Proofing

Beckenham - BR3

Enquiry from: Pippa S

Start Date: Immediate

I have a damp patch on the wall in my kitchen

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11 Mar

Building work | Damp Proofing

London - SW16

Enquiry from: Aamir R

Start Date: Immediate

My bedroom roof got damp marks. Need to fix that.

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04 Mar

Building work | Damp Proofing

Brentwood - CM13

Enquiry from: Sophie B

Start Date: Immediate

floor tiles lifting. took some up and the concrete underneath is damp. are you the property owner: owner of the property how many rooms do you need damp proofing: 1-2 rooms property type: detached pl...

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02 Mar

Building work | Damp Proofing

London - SW16

Enquiry from: Cam I

Start Date: Immediate

Initially: Inspection and analysis of damp wall Then: Repair works

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03 Feb

Building work | Damp Proofing

Ilford - IG2

Enquiry from: Alok A

Start Date: Immediate

Anti-Mould, Damp painting required for the entire 2/3 bedroom flat including cleaning existing mould etc.

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01 Feb

Building work | Damp Proofing

London - E7

Enquiry from: Zahirulhasan S

Start Date: Immediate

Due to recent rains, some water / moisture seems to have seeped onto the inner wall, blistering the paint / coating; so may need damp proofing / sealing of some sort.

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11 Jan

Building work | Damp Proofing

Bishop's Stortford - CM23

Enquiry from: Car M

Start Date: Immediate

TEST WALLS basement hack off half of wals plaster left tank will be at address 11.30 to 3 sunday and later on monday

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16 Dec

Building work | Damp Proofing

Hornchurch - RM12

Enquiry from: Simon P

Start Date: Immediate

Just moved into a house and started decorating. Noticed signs of damp in the corner of *** bedroom while painting. Discoloured and flaking paint. Rusty screws in window blind. Guessing a roof or rende...

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16 Oct

Building work | Damp Proofing

London - SE5

Enquiry from: Susan L

Start Date: Immediate

Basement level of flat has some damp issues. Requesting a report and quote. I am the Landlord, Susan Lunn and I live in Australia. However, please contact my letting agent, Kate Morrison at Urban V...

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06 Oct

Building work | Damp Proofing

Bishop's Stortford - CM23

Enquiry from: Evie R

Start Date: Immediate

Hello [Company Name], I own a property in Bishop’s Stortford and have noticed possible damp and mould behind my kitchen cabinets. I’ve also seen small insects (psocids) which I understand may be ...

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29 Sep

Building work | Damp Proofing

London - SW16

Enquiry from: Harish V

Start Date: Immediate

Require Damp proofing inside and outside the property

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26 Sep

Building work | Damp Proofing

Ilford, Chigwell - IG3

Enquiry from: D

Start Date: Immediate

Two bay windows at front of house

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19 Sep

Building work | Damp Proofing

London - SW17

Enquiry from: Selvi D

Start Date: Immediate

to check damp in loft room and one corner of living room

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29 Aug

Building work | Damp Proofing

Bishop's Stortford - CM23

Enquiry from: Carla M

Start Date: Immediate

MAJOR leaks left by insurance company have ingressed into the walls and been tested and surveyed to high damp levels and failed tanking to basement floor and outside toilet courtyard. Quote for all w...

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01 Aug

Building work | Damp Proofing

Hornchurch - RM12

Enquiry from: Brenda M

Start Date: Immediate

Quote on front wall as damp inside.

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24 Jul

Building work | Damp Proofing

London - SW11

Enquiry from: Callum W

Start Date: Immediate

PIV installation in basement

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FAQs

Why is it important to fix a damp problem?

Damp is a serious problem, particularly if you live in an old property, because it can lead to structural damage. This will cost you big money and could be very dangerous, to yourself and the property. Take damp seriously and get it inspected and resolved as soon as you discover it!

How can I tell what type of damp I’ve got?

Signs of rising damp tend to be close to the ground, usually no higher than a metre. It usually works its way up walls in horizontal lines. Penetrating damp usually develops in patches and can often be much higher up. For more advice, speak to a damp proofing professional.

How can I tell if my property has damp?

There are a few visible signs of damp, although it often goes undetected. However, in older or empty properties, this made become detectable through its smell. These include peeling paint and wallpaper, crumbling plaster, mould growth, black spots or spores on walls and ceilings, and rotting skirting boards and flooring.

How quickly can I redecorate my walls after damp proofing has been installed?

You should make sure that all signs of damp have gone before you redecorate your walls. If you want to paint your walls with a water-permeable emulsion paint, you can usually do this after 1 or 2 months. For other types of decoration you should wait longer.

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Greater London Damp proofing installers are rated 4.4 out of 5 based on 12 reviews of 66 pros.
The LeadsDoWork rating and review is an overall rating based on verified reviews and feedback from the customers with Damp proofing projects that have been connected with Damp proofing pros to help them. All Damp proofing contractors All Greater London Damp proofing contractors

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