Trusted UK service price guides — 2026

How Much Does a Damp Proofing Cost in Horsham? (2026 Price Guide)

⏱ 8 min read

Quick summary — Damp Proofing Cost in Horsham
Typical price range
£55 – £4,480
Average hourly rate
£40 – £75 per hour
Typical job duration
1–5 days
Certification required
PCA (Property Care Association) member recommended

Damp Proofing Cost in Horsham

If you need to hire a damp proofing in Horsham, knowing what to expect to pay before making any booking is essential. Horsham is located in South East England, and damp proofing prices here typically sit above the UK national average. This 2026 price guide covers typical job costs, hourly rates, the factors that drive price variation, and practical advice on finding a qualified, trustworthy damp proofing in Horsham.

Damp Proofing prices within Horsham itself can vary between postcodes: properties in premium or central areas may attract a further 10–15% premium compared to less central parts of the city.

Average Damp Proofing Cost in Horsham (2026)

Damp proofing costs in Horsham vary considerably depending on the type of work, its complexity, and whether standard or emergency rates apply. The prices below represent typical ranges for common damp proofing jobs in Horsham in 2026:

Damp survey: £225 – £560

Chemical injection DPC (per metre): £335 – £785 (per metre)

Replaster after damp treatment: £390 – £895 (per room)

Cavity wall waterproofing (per m²): £55 – £135 (per m²)

Tanking basement walls (per m²): £65 – £155 (per m²)

External waterproofing membrane: £1,120 – £4,480

Install sump pump: £895 – £2,800

Treat dry rot: £560 – £2,800

Treat wet rot: £335 – £1,680

10-year damp guarantee inspection: £225 – £560

Prices include labour. Materials may or may not be included — always confirm with your tradesperson. Emergency and out-of-hours work typically attracts a 30–60% surcharge on top of standard rates.

What Is Included in the Price?

A standard damp proofing quote should typically cover:

Items generally not included unless explicitly stated:

Typical Damp Proofing Hourly Rates in Horsham (2026)

Hourly rates for damp proofings in Horsham depend on time of call-out, the tradesperson’s experience, and the nature of the work. The table below shows representative ranges for 2026:

Time of Call-Out Typical Hourly Rate (Horsham)
Standard hours (Mon–Fri, 8am–6pm) £40 – £75
Evening (Mon–Fri, 6pm–10pm) £55 – £95
Weekend (standard hours) £60 – £100
Bank holidays & overnight £80 – £130

Most damp proofings in Horsham charge a minimum call-out fee equivalent to 30–60 minutes of work, regardless of actual job length. Always confirm whether call-out charges and VAT are included in any quoted figure before booking.

Factors That Affect Damp Proofing Costs in Horsham

Several variables can significantly influence what you end up paying for damp proofing work in Horsham:

DIY vs Hiring a Professional Damp Proofing

Important: Certain damp proofing work is legally required to be carried out by a professional holding PCA (Property Care Association) member recommended certification. Undertaking regulated work without the correct qualifications can invalidate your home insurance, breach building regulations, and — in serious cases — create significant safety risks. Never attempt to bypass these legal requirements to save money.

You should always hire a professional damp proofing for work that:

For small, cosmetic or inherently low-risk tasks — such as minor adjustments, surface painting, or straightforward component replacements — a competent DIYer may proceed safely. When in doubt, the cost of a professional is almost always justified against the potential expense of rework or repairs.

Damp Proofing Cost Comparison: Horsham vs Other UK Cities (2026)

The table below compares typical damp proofing hourly rates across a selection of major UK cities in 2026, to help put Horsham’s pricing in context:

City Average Damp Proofing Hourly Rate
London £50 – £95
Manchester £35 – £60
Birmingham £30 – £60
Leeds £30 – £60
Bristol £40 – £75
Edinburgh £35 – £70
Oxford £40 – £80
Cambridge £45 – £80
Horsham (this guide) £40 – £75 per hour

London consistently commands the highest damp proofing rates in the UK. Cities in the North, Midlands, Scotland, Wales, and Northern Ireland tend to be lower. Hiring a damp proofing based just outside Horsham’s central area may save 10–15% with no significant difference in quality or response time.

Tips to Save Money on Damp Proofing Work in Horsham

Questions to Ask Before Hiring a Damp Proofing in Horsham

Before signing any agreement or paying a deposit, ask every prospective damp proofing these key questions:

Red Flags: Warning Signs of a Cowboy Damp Proofing

How to Find a Trusted Damp Proofing in Horsham

Frequently Asked Questions

How much does damp proofing cost in the UK?

Damp proofing costs in the UK depend on the type and extent of damp. A chemical damp proof course (DPC) injection for a typical 3-bedroom semi-detached house costs £800–£2,500. Tanking (internal waterproofing) costs £50–£150 per m² of treated wall. Full surveys before any treatment are essential — avoid companies that diagnose without a proper independent investigation.

What causes damp in UK homes?

The three main types of damp in UK homes are: rising damp (moisture rising from the ground through capillary action in walls — relatively rare and often misdiagnosed); penetrating damp (water entering through defective brickwork, mortar, roofing, windows, or drainage); and condensation dampness (the most common type — caused by warm, moist air condensing on cold surfaces). Each requires a different remediation approach.

Is damp proofing covered by a guarantee?

Reputable CSRT or CRDS qualified damp proofing specialists typically offer a 20–30 year guarantee on damp proof course installations. However, such guarantees are only meaningful from a financially stable, long-established company, and are only valid if the root cause of damp has been correctly identified and fully remediated. Always check that the company is PCA (Property Care Association) registered.

Can I treat damp myself?

Minor condensation and surface mould can be addressed with improved ventilation, heat retention, and antifungal paint products. However, genuine rising damp or penetrating damp requires professional diagnosis and remediation. DIY chemical DPC injection kits are available but should only be used once the cause of damp has been reliably confirmed — incorrect treatment wastes money and can mask the true problem.

How do I find a reputable damp proofing company?

Look for CSRT (Certificated Surveyor in Remedial Treatment) or CRDS (Certificated Remedial Damp-proofing Specialist) qualified surveyors, and membership of the Property Care Association (propertycare.org). Be cautious of companies that give a damp diagnosis and quote during a single unannounced visit, without a proper investigation and written report. Always get at least two independent opinions.

Price disclaimer: All prices on this page are estimates based on 2026 UK market research and publicly available data for Horsham and the surrounding area. Actual costs will vary according to the specific job, access requirements, materials, and your exact location within Horsham. Always obtain at least three written, itemised quotes from qualified, insured tradespeople before committing to any work. Last verified: March 2026.

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