Morcem^® Pasta Juntas de Secado

Composition

Product based on inorganic mineral loads, calcium sulphate and additives.

Features and applications

• Application with jointing tape for complete joint treatment (filling and finishing) in plasterboard systems. 
• Plastering over screw heads.
• Forms a smooth and flat surface.
• Prepares the surface for decoration works.
• Reparation of areas that may have sustained minor damaged during installation or to correct slight irregularities in the boards.
• Manual or mechanical application
• Not suitable for tapeless joints treatments.

Substrates

• Laminated plasterboards.
• The supports should be resistant, stable, strong and clean, free of dust, remnants of release agents, organic products, etc.

Instructions for use

• Mix with clean water (9 liters per 20 kg bag). Stir with a mechanical mixer to obtain a homogeneous consistency, easy to work with and without lumps.
• Let the mixture stand for 10 minutes.
• Fill the joints with the paste and apply the jointing tape.
• Flatten with a spatula and remove the excess. Remove any lumps, bulges or air pockets under the tape. Leave until it is completely dry.
• Apply successive layers of paste according to the required level of finish, complying with the drying period between layers.
• Apply 2 to 3 layers of paste on screw heads.
• Use edge protectors and joint tapes on corners.
• Each coat should be slightly wider than the previous one.
• Apply the decoration layer after the treatment of the joints ensuring that the applied paste is completely dry, free of dust and clean.
• Water absorption of the boards and the paste must be regulated before the finish layer using a primer or plaster recommended by the manufacturer.

Cautions and recommendations

• Do not apply below 5ºC nor above 30ºC.
• It should not be applied above 85 % of humidity.
• In case of high humidity levels, the use of dehumidifiers may be required.
• It is necessary to comply with the drying times between layers to avoid shrinkage and cracks.
• Avoid mixing in dirty or contaminated containers with other mixtures, since this may cause the acceleration of the setting time.
• Do not use tools with remnants from other mixtures.
• Do not mix with other products.
• Do not apply or mix the product when there is risk of frost.
• Icy temperatures or high relative humidity can reduce the adhesion capacity of the paste.
• The area in which the product is going to be applied should be sufficiently ventilated, to avoid excess humidity.
• Not suitable for tapeless joint treatment.
• Do not return the excess of paste to the container with the rest of the mixed paste.

Packaging

20 kg plastic-lined paper bags
Shelf life: 1 year in sealed original packaging, sheltered from weather conditions and humidity.

Technical data

* Approximate consumption by m2 of finely adjusted edges, without taking into account peripheral joints or waste.

Note