London Damp Specialists Ltd cater to any type of damp problems such as:

  • Dry rot
  • Wet rot
  • Woodworm
  • Penetrating damp

Water leaking into your home?

The cause of the leak needs to be quickly identified and stopped immediately to prevent wood rot from happening.

Wood rot is the decay of wood and is caused when the wood or timber is in touch with water continuously or moisture is retained inside the wood. Unlike mould infestations, wood rot spreads discretely and unnoticeably. Therefore, it is imperative to look at any water seepage through cracks or walls as an urgent matter and not something that can be forgotten about. Immediate measures must be taken to avoid the formation of fungal growth as the spores thrive in the moist environment and can cause havoc to your family’s health.
A high moisture content inside buildings is often caused by leaky pipes, gutters, poor ventilation, cracked roofs and poor drainage systems. Penetration damp should be prevented with weather resistant coating on the exterior of the building and maintaining proper ventilation. Water resistant internal paints and unblocked gutters along with leak-free plumbing can provide better basement and nil rising damp effects. Dampness inducing conditions such as rising damp, damp penetration through walls, condensation and wetting of basements must be controlled as they affect the timber’s moisture level and induce decay. Preventing a moisture rich environment within your household can prevent proliferation of wet rot fungus. Prevention of wood rot is really important as water can create extensive damage to a property. Wood rot can be controlled by inhibiting the growth of fungus using fungicides.

Penetrative Damp

Penetrative damp can be witnessed in buildings of any age when there is excessive rain to face or older structures with porous bricks or blocked gutters and cracked roofing. Whichever the case, penetrative damp can bring about serious ill effects to the building as well as livelihood. Penetrative damp is nothing but rain water penetrating the masonry.
Fix the problem at once, call in the experts at London Damp Specialists on Outer London 020 8528 3864 or Inner London 020 7458 4864.

Penetrative damp is nothing but rain water penetrating the masonry. Also known as rain penetration, it is caused by the horizontal movement of moisture or rain water seeping through the walls at random points at all levels of a building, forming isolated patches of dampness on external walls after heavy rain. Rain penetration affects poorly installed wall-ties or cavity walls, internal walls and buildings with solid wall construction.

Penetrative damp is mainly caused by a defective building or presence of porous bricks allowing water to permeate through the walls.

Penetrative damp symptoms include:

  • Damp patches at any level on internal walls that don’t dry
  • Deterioration of plaster and paint
  • Appearance of blisters, stain and salt
  • Timber starting to decay and rot
  • Skirting boards and window frames rotting
  • Mould growth on internal decorations
  • Damp as well as mould smell
  • Moss growth on external walls
  • Frost damage to rooms making cold and uninhabitable

Penetrative damp can be identified with watermarks or damp patches isolated from windows or doors at any height providing high readings on the moisture detector.

To minimize the aftermath, firstly gutters, downpipes, renders and window frames and also roofs must be checked for blockages, cracks or damage. Secondly, weather-resistant coating on the external walls must be introduced to allow the cavity walls and solid walls to dry. External basement walls must be protected from constant moisture intrusion by tanking treatments and interior walls by setting damp proof membranes and water repellents. Building defects must be rectified with proficient builders.

Penetrative damp treatment

Penetrative damp treatment is more sophisticated than ever before.
Penetrative damp caused by poor cavity wall constructed and wall tie installation on the damp internal walls can be set right with damp proof membranes available on the market. External walls have to be taken care of with weather resistant paints and coatings as well as water repellant creams and coatings. Blocked gutters and downpipes must be cleaned and cracked ceilings must be furnished with water repellant creams and gels. Breathable colourless water repellants allow moisture to escape rather than blocking them. Window sills and other water storages must be cleaned from dirt, moss growth and leaves.

A damp proof course has the life expectancy of 30 years.
Building defects must be rectified by consulting expert builders to prevent further penetrative damp issues. Cement tanking systems can be introduced to treat penetrative damp problems caused by high external ground levels. Also for cellars and basement, basement waterproofing solutions must be installed for complete remediation. Penetrative damp renders can be refurnished by unobstructing and replacing.

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