Dryseal Masonry Protection Cream

Dryseal Masonry Protection Cream


Special Features

  • Up to 28% energy saving
  • Prevents rain penetration
  • Flood resistant
  • Deep penetration
  • Alkali resistant
  • Aqueous formulation, non-hazardous
  • Thixotropic – multi-coat performance in one application
  • 25 years product performance

With its unique thixotropic consistency and excellent water-repellent properties on a range of building materials, DRYSEAL stands out. As opposed to conventional liquid products, DRYSEAL can be applied in just one working operation to achieve the desired loadings for maximum effectiveness. Dependent on porosity, the effective siloxane ingredient penetrates the substrate within a short time (30 minutes to several hours) where it reacts to become a polymer silicone resin.

The initial white layer disappears completely and, since the effective ingredient is the same as in conventional liquid water repellents, substrates treated with DRYSEAL remain permeable to water vapour (allow the structure to ‘breathe’).

DRYSEAL has been formulated to penetrate as deeply as possible into porous masonry substrates and this provides optimal protection against the absorption of water and pollutants as well as frost/salt damage. This effect should not be confused with the "beading" effect often associated with water repellents. The beading effect demonstrates the surface action of a water repellent but may not be significant when assessing a product’s overall performance (resistance to rain water penetration under wind pressure).

DRYSEAL qualifies for 5% VAT

DRYSEAL qualifies for 5% VAT when applied as an energy saving material for insulation applications.

DRYSEAL masonry façade cream is classified as an energy saving material for insulating walls, as given in the Notice criteria in section 2.8. The reduced rate applies to DRYSEAL, which meets the required criteria specified by HMRC under current VAT legislation. DRYSEAL is the only energy saving masonry façade cream which is classified as non-hazardous under the Classification, Labelling and Packaging of Substances and Mixtures (CLP Regulation) 2009.  

DRYSEAL qualifies for the 5% VAT rate due to its unique, deeply penetrating, higher strength formulation enables DRYSEAL to meet the required performance criteria. DRYSEAL has been extensively tested both in-house and has undergone external evaluation which has proven DRYSEAL is an effective treatment and can make heat energy savings of up to 28%.

The reduced 5% VAT rate is of particular interest to the contractor, who can now charge at this rate for installation and product costs when carrying out a DRYSEAL installation for energy saving purposes. This is applicable for all residential buildings and any used solely for a charitable purpose. Where viable, necessary ancillary works for the installation can also be covered by the reduced rate. For further information it is advisable to contact HMRC or your accountant.

Full details of the VAT Notice 708/6 "Energy-saving materials" (November 2011) are available to view or download from the HMRC website.

Contact the Wykamol Group LTD for more information about DRYSEAL and its energy saving properties. 

View the Technical Information on Dryseal HERE


Facade coating without Dryseal                                 Facade coating with DrysealWalls









Cracking and efflorescence in a coating without Dryseal Effective masonry protection with Dryseal 

DRYSEAL is especially useful for treating cementitious materials including concrete blockwork as well as natural stone, clay and sand/lime bricks etc. The substrate must be in sound condition. Structural defects such as cracks, open joints, etc. plus rising damp and hygroscopic moisture must be remedied first. It must be ensured that water and damaging salts dissolved in the water cannot penetrate behind the treated surface since this can lead to frost damage (spalling).

Before a water repellent impregnation is carried out, crusts of dirt and pollutants as well as efflorescence, algae and moss must be removed by a suitable cleaning procedure. Cleaning opens the pores and capillaries, allowing them to absorb the impregnation agent. Dependent on the substrate, type and degree of soiling, we recommend the use of various Wykamol surface cleaners (e.g. Microtech Biocide). When cleaning, make sure that the masonry is damaged as little as possible. Chase out defective mortar joints and cracks and repair with a suitable re-pointing mortar. Close expansion and connection joints with elastic joint-sealing compounds.

DRYSEAL is not suitable for very dense, nonabsorbent substrates such as e.g. fine crystalline marble. Absorption of DRYSEAL is a prerequisite for optimal performance. This depends on the natural porosity and moisture content of the building material. For this reason, the substrate should be as dry as possible. If damaging salts are present, a quantitative salt analysis is essential.

High salt concentrations (especially chlorides, nitrates and sulphates) may lead to damage that cannot be prevented by a water repellent treatmentalone.

Adjoining surfaces: Due to the thixotropic nature of this product, where it is applied by brush or roller, accidental contamination of non-target surfaces can usually be avoided by taking reasonable care. However, where sprayed (see below), items such as windows and surfaces which are (or will be) varnished or painted, as well as plants, should be covered with polythene sheets.

Working Instructions

DRYSEALis applied to building materials undiluted in the desired layer thickness using airless spray equipment, a brush or lambskin roller. Dependent on the absorbency of the substrate, application rates of up to 0.3 l/mÇ can be applied in one working operation, even on vertical surfaces/ceilings without a loss of material. A second application can be carried out at any time but is usually not necessary. Resistance to rain is normally achieved within one hour of application. Full cure up to two weeks depending on climactic conditions.

Purchasing Information

Product Code: DRYSEAL3
Pack Size: 3 Litres

Dryseal advantages:

The Application:

  • in a single step.

  • by spray, brush or roller

  • the material can be applied without tricking or dripping

  • the enhanced contact time enables an outstanding penetration depth without waste of material

The properties:

  • based on silane/siloxane with lower volatility

  • the consistency provides enhanced contact time rsulting in:

The effect:

  • tremendous reduction of water

  • high beading effect

  • high penetration depth

  • allows masonry to breathe

  • high speed penetration of the active content within < 20 min

  • the treated surface remains coatable

Dryseal forms a hydrophobic silicone resin network:









Dryseal Water absorbtion / unit area:

Water Absorbtion Unit Area











Dryseal out performs other products on the market:

  • Outperforms other creams for hydrophobic impregnation of facades

  • Optimised active content with a special molecular weight distribution












Beading effect results guide (see graph 3 above)Testing Procedure

Page updated 13th Apr 2017, 12:33
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