Parex® Parmurex

BS EN 998-1:2010

Hydraulic mortar containing:

• Cement, lime, siliceous and calcareous sands, mineral pigments and specific admixtures.

12 Months from date of manufacture

Dry frost free conditions

CS IV

W2

A1

3.8-4.3 L per 25 kg bag

Coverage is provided as a guidance only, excludes wastage and will vary subject to substrate conditions and thickness applied.

EQUIPMENT REQUIRED

SUBSTRATE PREPARATION

• Substrates must be clean, sound, dust free and free of any material which may prevent adhesion.
• Remove all traces of plaster, paint, etc.
• Construction of the masonry must be compliant with BS 8000-3.
• On shuttered concrete and other nonabsorbent substrates, first apply a coat of ready-to use MICRO GOBETIS 3000 or a key-coat made up by adding 0.5 L of 751 LANKOLATEX to the mixing water volume for 25 kg of PARMUREX.
• On wet or wet patchy substrates or where different materials have been used it is advisable to apply a key coat made up by exchanging 0.5 litres of water for 0.5L of 751 LANKOLATEX or FIXOPIERRE for the mixing volume for a 25kg bag of PARMUREX. Allow the key coat to fully dry a minimum of 48 hours before the application of the next coat. This suggestion will assist against the effect of ‘block ghosting’ and shade variation. TV10 MESH may also be required, dependent upon substrate condition and project specification.

*The float/sponge/trowel smoothed finishes may vary in appearance, particularly due to different factors such as the line and level and condition of the substrate or the appearance of a slurry finish caused by over floating the surface. The latter may produce some micro cracking effect on the render surface which may affect the aesthetical appearance but does not affect its durability.

Advisory Note

• Due to shrinkage differentials, avoid applying a thin base coat and a thicker top coat application as the shrinkage values of a thicker top coat could cause the render to delaminate from the base coat. The same effect is also caused by applying a very hard render over a softer base coat.
• Always refer to the Sika mesh application details. To avoid shade variations always apply and finish the render application to whole elevations at the same time.

APPLICATION

• Refer to and comply with the Substrate Preparation first.
• For very severe wind driven rain index locations, high exposure or coastal zones please contact Sika for additional guidance as the render thickness may need to be increased and additional surface treatment may be recommended.
• Ensure the product is mixed correctly with the correct water content and do not allow the render to cure too quickly as surface holes in the render could occur.

SUITABLE FOR

• Machine or manual applications.

FOR WEATHERPROOFING CONCRETE BLOCK AND MASONRY SUBSTRATES

• Float smoothed finishes for receiving a painted / decorative finish or surfaces left as a grey coat render. Apply first coat, level, ruled, lined to a depth of 10 mm thick and leave with a toothed trowel finish ready to receive the second coat. For the finish, apply a minimum 5 mm coat and finish using a stainless steel trowel, wooden, plastic or sponge float according to the desired effect.
• For a base or key coat finish for receiving an additional decorative render finish. Apply one level, ruled, lined and compact 10 mm thick coat and leave with a toothed trowel finish.
• For a base or key coat finish for receiving tiling or a brick slip finish.  Apply one level, ruled, lined and compact 15 mm thick coat and leave with a toothed trowel finish.

APPLICATION TO WATERPROOF SUBSTRATES (e.g. concrete)

Float smoothed finishes for receiving a painted / decorative finish or surface left as a grey coat render. Apply a single coat between 7 - 8 mm thick, float-finishing as you progress using a stainless steel trowel, wooden, plastic or sponge float finish according to the desired effect. For thicker applications, apply 2 coats as for float finished weatherproofing coating.

IMPORTANT NOTE

• PARMUREX applied to concrete must not be covered with tiling as additional waterproofing requirements may be required. Contact Sika.
• Avoid using AXEL 3000 or 751 LANKOLATEX in the top coat application of the trowel, float or sponge smooth finish.

SUITABLE OVERCOATING MATERIALS
After a minimum of 7 days drying time.

• Any of the PAREX range of one-coat rendering mortars, e.g. MONOREX GM / GF, BLANC DU LITTORAL, MONOBLANCO etc. applied to an even thickness, with a minimum overall covering thickness of 5 mm before applying a spray textured, smooth spray textured or float finish and 8 - 9mm for a scraped finish. Ensure a minimum 15mm overall finish is achieved.

Apply after a minimum of 21 days drying time.

• Paint, acrylic based coatings e.g. PAREX REVLANE+, finishes, waterproofing systems.
• Bonded ceramic wall tiles applied in compliance with BS8000-11.1:1 & BS8000-11.2:1