Decorations made with WALL Decal Film can be cleaned with water using a moist sponge. The decorations can be completed with a coat of water-based transparent acrylic varnish, with a glossy or opaque finish according to the results desired, allowing use of detergents (but not containing alcohol or solvents) which makes the image more easily washable. If the application is made outside, this varnish should also have anti-UV properties to protect the colours for a longer period of time.

The more porous the wall and the greater effect of the fresco since the printed film is extremely thin and highlights any tiny imperfections and irregularity of the surface, giving the impression that the image is painted directly on the wall.

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Conditions necessary for application
Before every application, make sure the wall surface is suitable for decoration and check the weather conditions to which it is exposed. The surface must be dry and clean (dust and brush away any unwanted particles) and the paint must adhere well: if the wall is damp, application must be made later. If the plaster detaches easily or if tempera has been used (this can be lifted using adhesive tape), instead of acrylic paint, we advise preparing the wall as follows:
– pass a first hand of insulating acrylic fixative which has the function of creating an insulating barrier between paint and wall and facilitating adherence.
– pass one – two hands of washable white acrylic wall paint (water-repellent while allowing transpiration). This condition, the best in any case, is necessary when the decoration has to be applied to plasterboard because the water contained in the glue and also necessary for peeling off the TNT support, without an insulator, would cause the decorated plasterboard surface to swell.
Application should be done in normal conditions of humidity and temperature (best in closed and warm spaces), because too much humidity and the cold slow down the drying process and complicate the application procedure. In any event, do not attempt to apply when temperatures are below 10°.
– In application: from +10° to +40°
– Resistance after application: from -20° to +60°

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Method of application no. 1 (with self-adhesive glue)
Tools for application
– glue: water-based self-adhesive 7
– smooth foam rubber roller
– fur roller
– silicon paper to protect self-adhesive surface (can be provided on request)
– paper tape (possibly quite thick, e.g. 35mm.)
– plastic pipe with a diameter of about 5 cm.
– brush
– sponge
– transparent water varnish to spray or brush onto image

Suggestions
– Using a foam rubber roller spread the water self-adhesive glue directly on the printed face of the fabric.
– After about 30 minutes, when the self-adhesive glue has dried (it becomes very sticky), protect the printed side with silicon paper which will be removed when the print is transferred to the wall. Application can be made immediately or even after a few days.
– Application: position the print on the wall, with the silicon paper in contact with the wall, then fix the top side of the print along its whole length with the paper tape.
Roll the print upwards on a plastic tube of about 5 cm diameter, and then gradually remove the silicon protection by unrolling the print from the tube and pressing it accurately against the wall surface, pressing well from the centre outwards using a fur roller or similar so the print adheres perfectly and any air bubbles can be eliminated.
Otherwise:
– Using a fur roller, spread the water-based self adhesive glue for murals directly on the wall to be decorated, after preventively limited the area with paper tape.
– After about 30 minutes, when the self-adhesive glue has dried (this phase can be speeded up by blowing warm air on the glue using a hairdryer or dehumidifier), protect the glue with silicon paper which will be removed when the print is applied to the wall. Application can be made immediately or even after some days.
– Application: position the print on the wall and repeat the operations described above, with the necessary difference that, once the print has been rolled upwards, the silicon paper applied to the wall must be removed before rolling the print downwards. In both cases:
– On completion of the above operations, the transfer phase can be done immediately by using a sponge to dampen the non-woven fabric and remove it gradually from the print which is now anchored to the wall and to clean the latter with a damp sponge.
– Use the fur roller to press for the last time the decorated surface and/or knock a brush on it energetically so the colours can penetrate also into any irregularities of the wall surface.
– As a last step, it is possible to apply varnish or a water-based or acrylic protective lacquer to give a finish to the decoration which can be matte or glossy. The finish can be brushed or sprayed over the image, going over the borders which helps to render the image waterproof and easier to clean, as well as more homogeneous with the surrounding surface.

Application of a fresco using the elastic “strappo” technique

Method of application:
Open the package, unroll the elastic “strappo” and make sure it has not suffered any irreparable damage during transport.
During your inspection, very simple but to be done carefully, you may find some particles of plaster inside the packaging. This is an entirely physiological factor since the painting was done on plaster spread on the wall, and later removed and elasticised. Some particles of plaster remain trapped in the painted film and it is perfectly normal to find traces when unpacking or glueing.

Put the painting on a flat surface (on the floor or on a table, according to its dimensions and your needs), handling it very carefully, and with the help of another person position it where you want it to be applied, in order to calculate the height and distances. When you are sure this is the right position, use a pencil to lightly outline the painting.
Fix the top of the painted film with two or three drawing pins (no harm will come to the painting) and roll it upwards, using a cardboard or plastic tube, and get your helper to hold up the tube, making sure it does not rip in proximity of the drawing pins which are necessary to keep the fresco in position. Proceed by using a spatula to spread silicone glue inside the shape you traced on the wall, remaining about one centimetre from the pencil marks. We advise use of a neutral silicone and reticulation because it does not give off any odours and you can work in safety.
When you have spread the silicone over the whole surface of the shape, with the aid of your helper, slowly unroll and position the elastic “strappo” making sure that it coincides with the pencil tracing. Then cover the paining with a sheet of white tissue paper and using your hands or a rubber roller, press from the centre outwards, so the glue sticks to the film of the painting. Remove the tissue paper and check there are no bubbles or irregularities. If necessary, just a little pressure is needed to eliminate them. Finally, check that the outer edges of the fresco are not lacking in glue and if necessary, use a small spatula to add the silicone where needed so every part is glued.

Removal
Should you want to remove the elastic “strappo” fresco, its integrity can be preserved by following very carefully the following instructions. Using a long knife as a spatula and a cutter blade, you can slowly cut the layer of silicone glue at the back of the paining. Starting from the top and working downwards or diagonally from right to left or left to right. Even if there should be a tear in the film at this stage, nothing is lost because when repositioned, this can be mended and if done carefully, the intervention will be practically invisible.

Life span
Frescoes applied with the “strappo” technique are everlasting because they have been put to the test over the centuries for the resistance of their pigments. The only element that could deteriorate is the silicone used for applying them to the wall. But generally the new polymers are guaranteed to last for decades. Even if the silicone should give signs of failure, it can easily be reintegrated wherever necessary.

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