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Damp Proofing

 

Damp Proofing for Rising Damp.
Get your DPC injections with DryZone for a highly effective damp proof solution.

 

 

Damp Proofing Surrey and South West London

What is rising damp?

Rising damp occurs when groundwater rises up through walls, floors and masonry. Bricks and mortar can be very porous and contain many fine capillaries, through which water can rise. This can result in visible damp patches, crumbling plaster on interior walls.

Most modern properties are built with a damp-proof course, commonly referred to as a DPC.

Some properties, however, were built with no damp-proof course, or the original has failed, meaning that rising damp can occur and it is necessary to make remedial repairs.

What are the Effects of Rising Damp?

Decorative Spoiling – Moisture and ground salts introduced by rising damp can cause wallpaper to peel, plaster to deteriorate, and paint to blister.

Health Effects – It has been widely documented that excessive dampness in buildings can have negative effects on the health of the building’s occupants.

Erosion of the Building Fabric – Ground salts introduced into the wall by rising damp can attack and dissolve the binders in brick, stone, and mortar causing them to lose their strength and structural integrity. Crystallising salts can exert such forces that the mortar, brick, or stone microstructure is destroyed.

Increased Heat Loss – Dampness in porous building materials causes a reduction of insulation properties as air in the pores is replaced by more conductive water. For example, the thermal conductivity of a wet brick has been found to be approximately twice that of a dry brick.

DryZone is expected to remain effective for at least 20 years, as per relevant BBA certificate. Insurance Backed Guarantees available on request.

 

Tackling Penetrating Damp

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What is Penetrating Damp?

Penetrating damp occurs when water penetrates through the exterior surface of a wall. It is often not noticed until the moisture shows up on interior surfaces in the form of damp patches. Even if the damp doesn’t reach the interior of a property it can still cause problems such as rotting timber joists, freeze/thaw damage and poor insulation performance.

What Causes Penetrating Damp?

Penetrating damp has many causes, often it occurs because the building was constructed using overly porous building materials. Changing circumstances, such as increased rainfall intensity or cavity wall insulation, can also cause penetrating damp to become a problem even in previously dry properties.

How Do I Stop Penetrating Damp?

Pioneer Insulation offers a range of services designed to eliminate penetrating damp on overly porous brick, stone, concrete and masonry.

On average, 35% of all heat loss in a building occurs through exterior walls. The amount of heat loss varies according to the method of construction and amount of exposure to weather conditions but the easiest place to start improving insulation efficiency in a building is the exterior wall.

Stormdry has been tested to EN ISO 15148:2002 (e), demonstrating its effectiveness on concrete, mortar, brick and sandstone. Stormdry was granted BBA Certification in March 2015 with a stated durability of 25 years. Insurance Backed Guarantees available on request.

A damp wall is a cold wall. Contact us today for more information about making your home damp and mould-free.


Damp Proofing Partners

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