How to install a
damp proof course (DPC)
check for high ground levels, leaking gutters and downpipes, water leaks. A Damp
Proof Course must be at least 6 inches (150mm) above abutting ground level (whether
internal or external), to avoid splash up or 'bridging'.
Drill 12mm diameter holes at 120mm intervals in the mortar course (or via the
brickwork, angled down to meet the mortar course) selected to be at least 150mm
above outside or abutting ground level. Blow or vacuum holes to remove dust.
Fit the extension nozzle to the cartridge tube and load into the skeleton gun
Inject cream from the bottom of the hole outwards until the hole is full.
Replaster to our specification.
any skirting boards or joinery with Boron Ultra Gel.
can be capped with mortar or fitted with a plastic plug
to a minimum of 1.2 metres internally, to our specification, using sand and cement
and Rendapruf integral waterproofer, is required to finish the job and to prevent
'salts' damage to plaster finishes and decorations.
Rising Dampness is Blocked
Products required: Quick Cream DPC, Skeleton Gun - either a 380cc or professional
Products: Rendapruf Replastering Additive (5 litre), Wall Plugs, Boron Ultra
Gel (2.5 litre), UltraProof exterior wall treatment (5 litre or 25 litre), Anti-Mould
Paint (2.5 litre), Professional Skeleton Guns (380cc or 1000cc), Professional
Extension Nozzle (for repeated use with 1000cc cartridges)
Required: 12mm masonry bit, electric hammer drill, eye protection
straight to Price List and Order Form
damp proofing cream usage rates:
inch thick (115mm) single leaf wall - 1000cc (1 litre) per 9 metres, inject from
9 inch thick
wall (230mm) double leaf solid or cavity - 1000cc(1 litre) per 4.5 metres, inject
from one side or from both sides.
inch thick wall (460mm) solid or random fill - 1000cc (1 litre) per 2 metres,
inject from both sides
Problems in the House - how to get rid of damp
Damp walls in houses are sometimes caused by Rising damp, but treating damp always
requires careful analysis to avoid damp proofing walls that are suffering from
penetrating dampness, condensation or residual 'salts'. We recommend damp proofing
cream by hand injection of a new damp proof course (DPC).
you ask for our free help we will ensure that you know how to treat damp walls
properly to stop damp and if necessary how to use a Damp Meter. You can easily
use UltraCure damproofing cream to install a damp proof course, sometimes referred
to as a DPC, without any special training. In treating damp you may also need
to consider some tanking, below the damp proof course, which means forming a waterproof
coating to stop damp penetrating from below ground.
considerations- treating damp
damp can be found in houses which have not been built with a damp proof course
or where the damp proof course is faulty. The signs of rising damp can include
a tidemark on walls just above the skirting boards, damp patches that come and
go, 'salt' marks, loose paint or wallpaper and the plaster can be cold to the
touch. To stop damp of this kind we need to either install a new DPC or uncover
the original damp proof course level - it may have been bridged by raised garden
soil, pathways or even by the local Council in surfacing the pavements.
Rising damp is not confined to external walls. You should also examine your internal
and Party walls for the tell-tale signs. The problem of rising damp should be
addressed as soon as possible. Lack of treatment will result in a deterioration
of the masonry, plaster and any woodwork that is attached (for example, skirting
boards). Another significant side-effect of damp, some authorities believe, is
that the mould that it can cause is a major factor in childhood asthma. It can
certainly trigger asthma attacks! Apply one of our Anti-Mould products - Anti-Mould
Cleaner, Anti-Mould Paint or use our concentrated Anti-Mold Paint Additive (works
in all types of paint).