Salt prevention

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Nitrate, chloride, sulphate and ammonium salts are often found in building structures.

Nitrate and chloride salts most commonly originate in the ground. Their presence in plasterwork is usually an indication of capillary action rising damp.

Nitrate and chloride salts are hygroscopic, causing them to retain moisture and absorb additional moisture at times of high humidity. Coastal properties may suffer from chloride salt contamination due to the salt water carried in the air.

Sulphate salt contamination of cement based plasters results in the cement content expanding up to 3 times its original mass and the plaster breaking down. Sulphate salts however are not typically hygroscopic.

Ammonium salts are a by-product of the burning of fossil fuels and are commonly found in chimney flues and chimney breasts. Nitrate and chloride salts are also found where  ammonium salts are present. Ammonium salts are generally hygroscopic (absorb moisture from the air).

Ammonium salts are also often present in barn conversions or farm buildings that would once  of contained livestock, due to the high salt content in animal urine.

It is important when re-plastering a wall affected by salts that careful consideration is given to the type of plaster used. The water content of new plaster encourages salts to migrate  from the underlying wall structure to the new plaster resulting in further problems. Pam Ties has a range of products from salt neutralisers, specialist limelight plasters and additives to help prevent the passage of salts and physical barriers ie membranes.

 

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  • PAM 2.5 Mesh Membrane -- 1m x 20m
    The perfect modern solution to the problems caused by rising damp. No damp No salts No mess No problem Quick and easy to install, simply dot and dab plasterboard or skim over the top.   Applications To replace a failed DPC Cavity drain for basement walls, floors a..
    Inc. VAT : £120.00 Exc. VAT : £100.00
  • PAM 2.5 Mesh Membrane -- 2M x 20M
    The perfect modern solution to the problems caused by rising damp. No damp No salts No mess No problem Quick and easy to install, simply dot and dab plasterboard or skim over the top.   Applications To replace a failed DPC Cavity drain for basement walls, floors a..
    Inc. VAT : £240.00 Exc. VAT : £200.00
  • PAM Rend
    All purpose render additive. A waterproofer, salt inhibitor and plasticiser specifically developed for use after the insertion of a chemical damp proof course. Available in either 5 Litre or 25 Litre container Contains no chlorides Improves workability Dilute 25 - 1 with water ..
    Inc. VAT : £15.54 Exc. VAT : £12.95
  • PAM Salt Neutraliser
    A highly concentrated solution used to combat problems with salts in brickwork, stonework, etc. It can also be used on new plasterwork, but should be mixed with water (1:1 ratio). Available in 5 Litre containers ..
    Inc. VAT : £23.88 Exc. VAT : £19.90
  • PAM SBR Bonding additive
    PAM SBR is a multi purpose high strength bonding additive for cement based mortars. Improves adhesion and strength Excellent resistance to waters and salts Improved frost resistance Increased adhesion to a wide range of substrate Comes in 5 Litre or 25 Litre tubs ..
    Inc. VAT : £23.88 Exc. VAT : £19.90