Penetrating Damp

Penetrating damp is the ingress of water through the external skin of the building. If left untreated it can cause significant damage to a building both to the internal fabric and structure.

If left untreated this penetrating water can cause significant damage to the internal decorations of your property but more important, the structural integrity.

Cause of Penetrating Damp

Penetrating damp is caused by rainwater entering a property through the external wall. The wall in your home should repel rainwater but in some cases, rainwater will find a way through the wall.

Degraded mortar

The mortar between the bricks can degrade over time, this can be the age of the building or the mix of materials used when constructing the property. Rain can enter through this damaged mortar bed.

Damaged render

If the render is damaged in any way water will penetrate to affecting the brick or block underneath.

Porous brickwork

If the external brickwork is porous, water will seep into the property

Signs of Damp

One of the most obvious signs of penetrating damp in a property are stains appearing on an internal wall. It is common for the surface of the wall to bubble and crack as the water evaporates. Black mould is often a telltale sign of water ingress.

Look out for the following signs:

  • Damp patches on internal walls
  • Staining on external walls
  • Plaster flaking and blistering
  • Signs of decay on skirting boards and timber
  • Paintwork showing signs of deterioration

Do you have signs of penetrating damp in your property?

Penetrating damp treatment

Correct diagnosis of the penetrating damp issue will determine the necessary treatment as damp could be penetrating via multiple entry points.

If the rainwater is penetrating via defective guttering, degraded mortar or cracked render. We correct the source of the problem by repairing or replacing faulty or worn guttering, repointing the degraded mortar or repairing the damaged render.

When we carry out our repairs we will take great care to maintain the integrity of the building matching existing guttering, use only the correct materials and most importantly take pride in our work.

If the penetrating damp is caused by adverse weather conditions and/or porous materials we will apply a breathable water repellent to the affected area.

Our product of choice is Storm Dry due to its superior water repelling properties with the all important ability to let the building breathe. We have used this product on multiple properties in the North East and is our default recommendation for penetrating damp caused by porous brick/stonework.

RH Preservation

RH Preservation offer dampproofing, penetrating damp, rising damp, condensation, timber infestation, wet rot, dry rot and wall tie corrosion services. 

Our service area includes Newcastle upon Tyne, Sunderland, Durham, Northumberland, South Tyneside and Middlesbrough. 

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RH Preservation
Dukes Way