Question 1

What is DampBlock™ AQ50?

Accepted Answer

A permanent DPC injection resin. DampBlock™ AQ50 is an aqueous emulsion enriched with siloxanes — in plain English, a silicone-based resin carried in water. It’s injected into the centre of each brick, spreads through the masonry, and cures to form an impermeable barrier that stops moisture rising from the ground. The whole brick becomes damp proof — not just the mortar joint.

Question 2

How is DampBlock™ AQ50 different from older chemical DPCs?

Accepted Answer

Older chemical DPCs used petrochemical solvents — strong-smelling, flammable, and toxic. DampBlock™ AQ50 is aqueous-based: completely odourless, non-toxic, and non-flammable. Zero VOC, zero ozone depletion, zero global warming potential. The chemistry has moved on. This is what a modern DPC injection looks like.

Question 3

Is it safe for my family and pets?

Accepted Answer

Completely. DampBlock™ AQ50 has no chemical odour, no toxic fumes, and no flammable solvents. Your family and pets can stay home during the entire treatment. Most homeowners tell us they barely noticed the crew was there.

Question 4

How long until the wall dries out?

Accepted Answer

The new DPC stops moisture rising immediately, but the existing moisture already in the wall above the barrier takes time to evaporate. Expect 6–12 months for full drying, depending on wall thickness and ventilation. It’s not instant — but the damp is done rising from day one.

Question 5

Will rising damp come back after treatment?

Accepted Answer

No. The DPC is permanent. Once the resin cures inside the brick, it forms a continuous impermeable barrier across the full width of the wall. Moisture from the ground cannot pass through it. Every treatment is backed by a written 20-year product and workmanship warranty. The DPC is permanent. If rising damp returns, so do we.

Question 6

When can I paint or replaster the wall?

Accepted Answer

After the wall has fully dried — typically 6–12 months. Plastering over a damp wall traps moisture and leads to the same bubbling and flaking you started with. Buildfix removes the salt-damaged plaster as part of the treatment, then the wall dries naturally before being finished smooth and ready to paint.

Question 7

How much does rising damp treatment cost?

Accepted Answer

Every home is different — the total length of wall affected and how deep the moisture has penetrated both shape the cost. For an approximate price range and what's involved, see the damp proofing pricing guide. A fixed-price quote is provided after the free assessment. The price you see is the price you pay.

Question 8

Does the treatment come with a warranty?

Accepted Answer

Every DampBlock™ AQ50 treatment is backed by a written 20-year product and workmanship warranty. The DPC is permanent. If rising damp returns, so do we.

DampBlock™ AQ50

DampBlock™ AQ50

The resin that stops rising damp permanently

Behind the performance

Behind the performance

Questions?

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TL;DR