London regional pricing

How Much Does a Damp Proofer Cost in Haringey?

Updated prices for . Haringey prices are typically 24% above the national average.

12 services priced
London region
Updated

Price summary

Haringey Price Summary

Service Low Average High
Rising Damp Treatment (Per Wall) £310 £620 £1,240
Damp Proof Course Injection £620 £1,490 £3,105
Condensation Treatment £185 £495 £995

Prices include labour and materials. VAT may apply. Based on London regional pricing.

Full pricing

All Damp Proofer Prices in Haringey

Haringey is in Greater London and damp proofer costs here are 24% above the national average. Prices are based on real regional wage data from the Office for National Statistics.

All prices include materials and labour unless stated otherwise. Prices verified 2026

Rising Damp Treatment (Per Wall)

Low

£310

Average

£620

High

£1,240

Half day to 1 day

More details

Treating rising damp on a single wall by injecting waterproofing cream into the base of the wall. Holes are drilled at regular intervals and the cream creates a barrier that stops moisture rising up. Does not include replastering.

~81% labour, ~19% materials

What affects the price

  • Length and thickness of the wall
  • Wall construction (brick, stone, solid, cavity)
  • Accessibility of the wall (furniture, fittings)
  • Whether internal or external injection is needed

Damp Proof Course Injection

Low

£620

Average

£1,490

High

£3,105

1-2 days

More details

Injecting a waterproof barrier around the base of the whole property to stop damp rising up from the ground. Holes are drilled at regular intervals, waterproofing cream is injected into the wall, and the holes are patched. Price based on a mid-terrace or semi-detached property.

~81% labour, ~19% materials

What affects the price

  • Total linear metres of wall to be treated
  • Wall type and thickness (thicker walls need more product)
  • Number of walls requiring treatment
  • Whether external ground levels need lowering

Condensation Treatment

Low

£185

Average

£495

High

£995

Half day

More details

Diagnosing and treating condensation problems in your home. Solutions may include installing extractor fans, automatic vents that open when humidity is high, or a whole-house ventilation unit that pushes fresh air through the property. Includes a survey and recommendations.

~53% labour, ~47% materials

What affects the price

  • Severity and extent of the condensation problem
  • Type of ventilation solution required (fans, vents, PIV)
  • Number of rooms affected
  • Whether mould treatment is also needed

Penetrating Damp Repair

Low

£250

Average

£620

High

£1,490

Half day to 1 day

More details

Finding and fixing where rainwater is getting into your walls. Common fixes include replacing crumbling cement between bricks, sealing around windows, repairing the outside wall coating, or applying a waterproof treatment to the exterior.

~77% labour, ~23% materials

What affects the price

  • Source and severity of the water ingress
  • Type of repair needed (repointing, render, sealant)
  • Height and accessibility of the affected area
  • Whether scaffolding or access equipment is needed

Basement Waterproofing and Tanking

Low

£2,480

Average

£6,205

High

£12,410

1-2 weeks

More details

Waterproofing a basement or cellar to stop water getting in. This involves coating the walls and floor with waterproof materials, or fitting a drainage membrane that channels water to a pump that removes it. Turns a damp cellar into a usable dry space.

~62% labour, ~38% materials

What affects the price

  • Size of the basement or cellar
  • Waterproofing system type (tanking slurry, membrane, combined)
  • Water table level and severity of water ingress
  • Whether a sump pump and drainage channel are required

Mould Removal and Treatment

Low

£250

Average

£560

High

£995

Half day to 1 day

More details

Professional removal of mould from walls, ceilings, and other surfaces. The mould is killed with a specialist wash, then affected areas are repainted with anti-mould paint. Includes advice on stopping it coming back. Price for a single room.

~83% labour, ~17% materials

What affects the price

  • Size of the affected area
  • Severity of mould growth (surface vs deep penetration)
  • Whether the underlying cause has been resolved
  • Number of rooms requiring treatment

Damp Survey and Report

Low

£185

Average

£310

High

£495

1-2 hours

More details

Professional damp survey using moisture meters and thermal imaging to identify the type and source of damp. Includes a written report with diagnosis, recommendations and estimated repair costs.

What affects the price

  • Size and type of property
  • Number of areas or rooms to inspect
  • Whether thermal imaging or specialist equipment is used
  • Complexity of the damp issues present

Cavity Wall Tie Replacement

Low

£620

Average

£1,860

High

£3,725

1-3 days

More details

Replacing the metal ties that hold the inner and outer layers of your walls together. Over time these can rust and fail, which can cause the outer wall to bulge or crack. New stainless steel ties are drilled into the wall to replace the old ones.

~78% labour, ~22% materials

What affects the price

  • Number of wall ties to be replaced
  • Wall construction and cavity width
  • Property size (terrace, semi, detached)
  • Whether scaffolding or cherry picker access is needed

Timber Treatment (Dry Rot)

Low

£620

Average

£1,860

High

£4,965

2-5 days

More details

Treating dry rot — a serious fungus that eats through wood and can spread through walls. All affected timber is removed, the surrounding walls are treated with anti-fungal spray, and new timber is fitted to replace what was taken out.

~77% labour, ~23% materials

What affects the price

  • Extent of the dry rot outbreak
  • Whether structural timbers are affected (joists, beams)
  • Accessibility of the affected area
  • Amount of timber requiring replacement

Timber Treatment (Wet Rot)

Low

£250

Average

£745

High

£1,860

1-2 days

More details

Treating wet rot — wood decay caused by persistent dampness, commonly found in window frames, door frames, skirting boards, and floor timbers. The rotted sections are cut out, preservative is applied, and new timber is fitted.

~76% labour, ~24% materials

What affects the price

  • Extent of the wet rot damage
  • Type of timber affected (structural vs cosmetic)
  • Whether the moisture source has been resolved
  • Amount of timber needing replacement vs treatment

Salt Damage Replastering

Low

£495

Average

£995

High

£1,860

1-2 days

More details

Removing plaster damaged by damp and salt deposits (the white crystals that appear on damp walls) and replastering with specialist plaster that blocks the salts from coming through again. Price per wall.

~79% labour, ~21% materials

What affects the price

  • Area of wall requiring replastering
  • Depth of salt contamination in the masonry
  • Type of renovation plaster system used
  • Whether the damp proof course has been treated first

Ventilation System Installation

Low

£495

Average

£995

High

£1,860

Half day to 1 day

More details

Installing a ventilation system to stop condensation and moisture building up in your home. Options range from simple extractor fans that switch on automatically when humidity rises, to whole-house systems that push fresh filtered air through every room.

~44% labour, ~56% materials

What affects the price

  • Type of system (PIV, extractor fans, MVHR)
  • Property size and number of rooms
  • Whether ducting needs to be run through the loft or walls
  • Electrical work required for connection

Step by step

What's Involved in Hiring a Damp Proofing

Damp proofing typically starts with a professional survey to identify the type and source of damp, followed by targeted treatment to stop moisture entering your home.

1

Book a damp survey

A qualified damp surveyor visits your property with moisture meters and, in some cases, thermal imaging cameras. They check walls, floors and timbers to identify whether you have rising damp, penetrating damp, condensation or timber decay. This usually takes 1-2 hours.

2

Get a written diagnosis and quote

The surveyor provides a written report explaining exactly what type of damp you have, what is causing it, and the recommended treatment. A detailed quote should break down labour, materials and any making-good costs. Get at least two quotes to compare.

3

Prepare the affected areas

Before treatment begins, furniture and belongings need to be moved away from the walls being treated. If internal plaster is damaged by damp or salt, the contractor may need to hack off old plaster before the damp proofing work starts.

4

Carry out the damp treatment

The specific treatment depends on the diagnosis. Rising damp is treated by injecting waterproofing cream into the base of walls. Penetrating damp may involve repointing, render repairs or external waterproofing. Condensation problems are solved with improved ventilation.

5

Replaster and make good

After treatment, affected walls are replastered using specialist renovation plaster that resists salt deposits. This is a separate trade (plastering) and is sometimes included in the damp proofer's quote or quoted separately. Allow several weeks for new plaster to dry fully.

6

Receive your guarantee

Reputable damp proofing companies issue a written guarantee, typically 20-30 years for injected damp proof courses. Check whether the guarantee is insurance-backed, which means it remains valid even if the company ceases trading.

Regional comparison

How Haringey Compares

Average cost of rising damp treatment (per wall) across regions.

Haringey
+24% £620
National Average
baseline £500
London
+24% £620

Local insights

What Affects Damp Proofer Costs in Haringey?

Haringey's housing stock ranges from Georgian and Victorian terraces to post-war estates and modern new-builds, with a range of property types and ages that can affect the scope and cost of work across the borough. Properties in areas like Islington, Hackney and Brixton vary enormously in age, layout and condition, all of which directly affect damp proofer costs. With a population of null, Haringey is one of the more expensive areas for damp proofer work in the UK. Older properties tend to need more preparation work and present access challenges that push prices toward the higher end — for example, damp proof course injection here averages around £1,490.

London is the most expensive part of the UK for trade work, with labour rates running around 24% above the national average. This reflects the high cost of living, congestion charges, and expensive parking that tradespeople factor into their quotes. In Haringey, local demand for damp proofer services varies depending on the mix of residential and commercial properties in the area, and there is no shortage of qualified damp proofer professionals across the capital. With fewer tradespeople based locally, you may find slightly less choice, and it is worth booking ahead for larger jobs. Prices still vary by 30-50% between tradespeople for the same job, making multiple quotes essential.

Several factors affect what you will pay for damp proofer work in Haringey. The scope and complexity of the job is the biggest driver — straightforward work in accessible locations will be at the lower end, while anything involving older properties, difficult access, or structural complications will cost more. Material choices also make a significant difference; opting for premium brands or higher-spec products can add 20-40% to the total. As one of the more expensive areas for trade work, Haringey residents typically pay around £620 for rising damp treatment (per wall) and £2,480 to £12,410 for basement waterproofing and tanking.

When getting quotes in Haringey, aim for at least three from different qualified professionals. With fewer tradespeople based locally, you may find slightly less choice, and it is worth booking ahead for larger jobs. Ask each one to visit and assess the work in person rather than quoting over the phone. A good damp proofer will check the existing setup, identify any potential complications, and give you a detailed breakdown of costs. In a area like Haringey, there is plenty of choice, so do not settle for the first quote you receive. Be wary of quotes that seem significantly cheaper than others — they may be cutting corners on materials or not including everything in the price. Always check qualifications, insurance and recent reviews before hiring.

Depending on the work involved, you may also need builder (£37,230–£99,280), plastering (£495–£1,240), or painting & decorating (£250–£805) in Haringey.

Common questions

Frequently Asked Questions

Common questions about damp proofer costs in Haringey.

What is the difference between rising damp, penetrating damp and condensation?
Rising damp comes up from the ground through walls that lack a proper damp proof course, causing a tide mark up to about one metre. Penetrating damp enters through the external walls or roof due to defects like cracked render or missing pointing. Condensation is caused by moisture in the air settling on cold surfaces and is the most common type of damp in UK homes.
Do I need a damp survey before treatment?
Yes. A proper damp survey identifies the type and cause of damp, which determines the correct treatment. Treating rising damp when the real problem is condensation wastes money and does not fix the issue. Reputable damp proofers will carry out a survey before recommending any work.
How long does a damp proof course (DPC) last?
A chemical injected DPC typically lasts 20-30 years and most reputable companies offer a 20-year guarantee. The original physical DPC in a well-built property should last the lifetime of the building, though it can fail or be bridged over time.
Can I treat damp myself?
Condensation can often be managed with better ventilation, extractor fans and dehumidifiers. However, rising damp and penetrating damp usually require professional diagnosis and treatment. Incorrectly diagnosing the type of damp or applying the wrong treatment can make the problem worse and cost more in the long run.
How long does damp treatment take to dry out?
After a damp proof course injection, walls can take 6-12 months to dry out fully depending on wall thickness and ventilation. New renovation plaster applied after treatment needs 4-6 weeks to dry before painting. Using a dehumidifier can speed the process, but patience is essential for a lasting result.
Is damp covered by home insurance?
Standard home insurance policies rarely cover damp proofing, as damp is considered a maintenance issue rather than sudden damage. However, if damp is caused by a specific event such as a burst pipe or storm damage, the resulting water damage may be covered. Check your policy or speak to your insurer.
How do I know if a damp company is reputable?
Look for membership of the Property Care Association (PCA), which is the UK trade body for damp proofing. PCA members must follow a code of practice and use qualified surveyors. Also check that any guarantee offered is insurance-backed, so it remains valid even if the company goes out of business.
Will damp proofing affect my property value?
Untreated damp can significantly reduce your property value and put off buyers. Having damp professionally treated with a transferable guarantee actually reassures buyers and can help a sale go through more smoothly, especially if the guarantee is insurance-backed and passes to the new owner.
Can damp come back after treatment?
A properly installed damp proof course should last 20-30 years. However, damp can return if the underlying cause changes — for example, if external ground levels are raised above the DPC, or if new render bridges the damp proof course. Regular maintenance of external walls, gutters and ground levels helps prevent recurrence.
How much does a damp proofer cost in Haringey in 2026?
Rising Damp Treatment (Per Wall) in Haringey typically costs between £310 and £1,240, with the average being around £620. Prices vary depending on the scope of work, materials used, and the specific requirements of your property.
Are damp proofer prices cheaper in Haringey than London?
Haringey prices are 24% above the national average, though still comparable to London for rising damp treatment (per wall).
How do I find a good damp proofer in Haringey?
Get at least three quotes from different tradespeople, check recent reviews, and ask whether the quote includes VAT and everything you need. A detailed written quote that breaks down all costs is a good sign. Always check qualifications, insurance and recent reviews before hiring.
What affects damp proofer prices in Haringey?
The main factors are the scope and complexity of what you need, the options and products chosen, and local market rates. Haringey rates are 24% above the national average. Getting multiple quotes is the best way to ensure a fair price.
Do damp proofer prices include materials in Haringey?
The prices shown on this page include all typical costs. However, when getting real quotes, always confirm what is and isn't included. Some tradespeople break out costs separately, while others give an all-in price. Ask for a detailed breakdown before agreeing to any work.