Rising Damp Treatment in Ipswich
Expert diagnosis and treatment of rising damp in Ipswich homes using chemical DPC injection.
Rising damp occurs when groundwater moves up through walls via capillary action, typically affecting properties built before 1875 without a damp-proof course. Treatment involves injecting a chemical DPC at £25-40 per square meter, followed by replastering affected areas. Most Ipswich homes can be treated in 2-3 days, with walls drying over 2-4 weeks before final plastering.
Last reviewed: October 2026 ·Verified against Property Care Association guidelines and 15+ years trade experience
What is Rising Damp?
Rising damp is groundwater moving up through masonry walls by capillary action. Brick and stone are porous materials containing tiny channels. Without a barrier, water climbs these channels, bringing dissolved salts with it.
Properties built before 1875 often lack any damp-proof course. Later homes have a physical DPC (slate, bitumen felt, or plastic membrane) but this can fail after 100+ years. In Ipswich's older housing stock, particularly Victorian terraces near the waterfront, rising damp is common.
How to Identify Rising Damp
Look for these signs:
- Tide marks on internal walls, usually 0.5-1 meter above floor level
- Salt staining (white powder or crystals on the wall surface)
- Peeling paint and wallpaper at skirting level
- Damp, musty smell in ground-floor rooms
- Rotting skirting boards where wood meets damp plaster
Note: Not all damp at low level is rising damp. Condensation, leaking pipes, and penetrating damp from external ground levels can mimic it. A professional moisture survey identifies the true source.
Our Treatment Process
We use chemical DPC injection, the industry-standard method approved by the Property Care Association:
- Survey: Moisture meter readings at multiple heights to confirm rising damp, not other sources.
- Preparation: Remove skirting boards and drill injection holes (12mm diameter) at 115mm spacing along the mortar course, 150mm above external ground.
- Injection: Silicone or silane-based cream injected under pressure. This forms a water-repellent barrier as it diffuses through the wall.
- Drying: Walls left to dry for 2-4 weeks. Contaminated plaster (salt-laden) is hacked off to 300mm above the high tide mark.
- Replastering: Sand-cement render applied with waterproof additive, then skimmed. Skirting boards refitted.
Typical completion: 1-2 days for injection, then 2-4 weeks drying, then 2-3 days for replastering.
Materials We Use
We use silicone cream DPC products certified to BS 6576. Silicone-based systems are preferred over older silane formulations for better penetration in dense masonry. All products are low-VOC and safe for occupied properties.
Replastering uses sand-cement render (3:1 ratio) with integral waterproofer, not gypsum plaster (gypsum is hygroscopic and incompatible with damp walls).
Pricing
Our rates (as of October 2026):
| Item | Price |
|---|---|
| Chemical DPC injection | £25-40/sqm |
| Hack off contaminated plaster | Included |
| Sand-cement replastering | £15-25/sqm |
| Damp survey | £97+VAT (deductible) |
Prices based on typical Ipswich 3-bed semi, ground floor, standard wall thickness (225-350mm). Exact quote after survey.
Frequently Asked Questions
What is rising damp?
Rising damp occurs when groundwater moves up through walls via capillary action. It typically affects properties built before 1875 without a damp-proof course, or those where the DPC has failed. You'll see tide marks on walls, usually up to 1 meter high, along with salt staining and plaster damage.
How much does rising damp treatment cost in Ipswich?
Chemical DPC injection typically costs £25-40 per square meter in Ipswich, depending on wall thickness and accessibility. A typical 3-bedroom semi with rising damp on 2-3 walls costs £800-1,500 including replastering. We provide itemised quotes with no hidden fees.
How long does rising damp treatment take?
DPC injection takes 1-2 days for a typical property. The wall then needs 2-4 weeks to dry before replastering. Total project time is usually 2-3 weeks from start to finish.
Do you offer guarantees on rising damp work?
Yes. Chemical DPC injection work comes with a 20-year guarantee against rising damp reoccurrence, transferable to new owners.
Can I treat rising damp myself?
DIY rising damp treatment is possible but rarely successful. Incorrect diagnosis (treating condensation as rising damp) and improper injection technique (insufficient coverage, wrong depth) lead to failure. PCA-certified contractors have calibrated equipment and know how to identify true rising damp vs. other damp sources.
Is rising damp covered by home insurance?
Rarely. Most UK home insurance excludes gradual deterioration like rising damp. If rising damp damages timber (causing dry rot), some policies cover the rot but not the underlying damp cause. Check your policy wording.
Why Choose Us?
We're an Ipswich-based damp treatment service with transparent pricing, fast response, and guaranteed work. No high-pressure sales. No hidden costs. Free quotes within 1 working day.
Get a free rising damp survey
Call us or fill in the contact form. We'll respond within 1 working day with an appointment slot for your free, no-obligation survey.
Related Services
Penetrating Damp Solutions ·Condensation Control ·Damp Surveys ·Full Price Guide
Last reviewed: October 2026