Damp proofing in Portsmouth
Penetrating Damp Treatment in Portsmouth
Penetrating damp treatment in Portsmouth. This is water getting in from outside through a fault, so the patch gets worse after rain rather than sitting at the base of the wall.
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A free, no-obligation survey and a written quote.
Penetrating Damp Treatment
Penetrating Damp Treatment across Portsmouth
Penetrating damp treatment in Portsmouth. This is water getting in from outside through a fault, so the patch gets worse after rain rather than sitting at the base of the wall.
The key in Portsmouth is tracing exactly where the water gets in, because treating the inside wall without fixing the outside fault just lets it come straight back.
What’s included
What penetrating damp treatment in Portsmouth covers
Every quote varies depending on the property and what the job needs, but here is what a typical penetrating damp treatment job in Portsmouth covers from start to finish.
- A survey to trace where water is entering
- Repairs to render, pointing and flashing
- Clearing and repairing gutters and downpipes
- Sealing around windows, doors and openings
- Making good the damaged plaster inside
How we do it
Penetrating Damp Treatment in Portsmouth: the process
Step 01
Trace the source
We inspect the outside to find exactly where water is getting in.
Step 02
Fix the fault
Render, pointing, flashing, gutters or seals are repaired as needed.
Step 03
Let it dry
The wall is allowed to dry out now the water is stopped.
Step 04
Make good
We replaster and make good the affected area inside.
Penetrating damp treatment in Portsmouth homes
Penetrating damp is water arriving from outside rather than rising from the ground. It is the most fixable of the three damp problems and the most frequently mistreated, because the patch shows on the inside wall while the fault sits on the outside. Every Portsmouth survey starts by finding where the water actually gets in.
How to tell it is penetrating damp
The giveaway is weather. A penetrating damp patch darkens during and after heavy rain and fades in a dry spell, then returns with the next downpour. It usually sits as one defined area rather than an even band, and it can appear at any height, including upstairs and on chimney breasts.
Rising damp, by contrast, sits low with a level tide mark and ignores the weather. Condensation collects in cold corners and behind furniture. Telling them apart matters, because injecting a damp proof course into a wall with a leaking gutter above it changes nothing at all.
Where the water is getting in
On most Portsmouth properties the fault is one of a short list. Perished or missing mortar pointing lets water track through the joints. Cracked or blown render holds water against the masonry instead of shedding it. A blocked or split gutter soaks the same strip of wall every time it rains.
Defective window and door sills let water run back into the reveal. Failed flashing around a chimney or a roof abutment sends it straight down inside. On cavity walls, mortar droppings or badly fitted insulation can bridge the cavity and carry water across to the inner leaf.
How we treat penetrating damp
Treatment runs outside first. We repair the fault we found, whether that means repointing a section, patching render, clearing and realigning guttering, resealing a sill or renewing flashing. Until the water stops arriving, anything done inside is decoration.
Once the wall has dried we make good inside: hacking off plaster where it has blown, treating any affected timber and replastering. On elevations that take driving rain we may also recommend a breathable water-repellent treatment, which sheds rain while still letting the masonry dry outwards.
Penetrating damp treatment cost in Portsmouth
Penetrating damp is usually the cheapest of the three to put right, because the repair is often small and specific. Clearing a gutter and making good one patch of plaster is a modest job. Repointing a whole elevation and replastering a room is not.
We survey the Portsmouth property, identify the fault, then quote the external repair and the internal make-good separately in writing, so you can see exactly what you are paying for and why.
Penetrating damp treatment near you in Portsmouth
We cover PO2 and the villages around Portsmouth, including Portsea, Eastney, North End, Stamshaw, Hilsea and Copnor. Because the cause is almost always outside, we look at the elevation, the guttering and the ground levels as well as the wall you can see.
Book a free survey and we will show you where the water is getting in before quoting to stop it.
Book a free penetrating damp treatment survey in Portsmouth
Tell us what you have noticed and we will come out, find the cause and provide you with a written quote with no obligation.
The quote
Penetrating Damp Treatment in Portsmouth costs
Every property is different, so we quote each Portsmouth job on its own after a free survey rather than off a description. These are the things that move the figure, and we set it all out in writing before any work starts. The visit is free.
- What is letting the water in and how easy it is to reach
- Whether scaffolding or access equipment is needed
- How much internal making-good is required
- The number of areas affected
Common questions
Penetrating Damp Treatment in Portsmouth: your questions
Why does the damp patch get worse when it rains?
Do you fix the outside as well as the inside?
Can you find the leak?
How do you find where the water is getting in?
Will I need scaffolding?
Get a quote in Portsmouth
A free, no-obligation survey and a written quote.
Looking for a service other than Penetrating Damp Treatment in Portsmouth?
We cover the full range of damp and timber work for Portsmouth homes:
Not in Portsmouth? Still looking for Penetrating Damp Treatment near you?
We provide penetrating damp treatment across Hampshire, including:
We also provide penetrating damp treatment to: Portsea, Eastney, North End, Stamshaw, Hilsea, Copnor