This is an exterior wall construction method (conventional wet construction method) for the stone-style wall material "CAN'STONE".
Applicable substrate: Concrete block, lath mortar
2. Preparation for pasting
Remove the stones from the multiple cartons and place them temporarily in the work area.
Create an overall image and paste it in.
3. Applying mortar
Apply resin mortar (recommended: Nippon Kasei NS-ST mortar) to the base, squeezing it in, then apply two coats to adjust the thickness to about 5mm. The area you apply at one time should be limited to the area where you will finish laying the stones within the open time (working time) of 30 minutes.
※point※
The open time varies depending on the season, temperature, and other conditions. If you touch the resin mortar applied to the base with your hand and it does not stick to your hand, the open time is too long. Check as you work and shorten the open time according to the situation.
1. Surface preparation
A. In the case of concrete, block, or raspberry base...
After inspecting and cleaning the base, apply an adhesive enhancer (such as Tilement EV-300) with a roller. In the case of a rasmol base, allow sufficient curing time to ensure that it is completely dry and has minimal unevenness before applying the adhesive enhancer.
B. In the case of wooden base...
Apply waterproof paper and use it as a mortar base, or create a mortar base on top of a mortar board. After allowing sufficient time for curing, carry out the same work as in (a).
※point※
◎ Avoid carrying out installation in rainy weather and carry out on a sunny day.
◎ When carrying out work during cold seasons, do not carry out work when the temperature is below 5°C or if it is expected that the temperature will drop below 5°C during the curing period after work.
4. Installation (Improved crimping method + Vibration tool)
1. After cleaning the back of the stone with a brush, apply about 5mm of resin mortar evenly to the entire back of the stone, then attach it to the wall. The back of the stone is uneven, so make sure that the mortar is applied firmly to the entire back. Use a vibrating tool to press the resin mortar firmly into the joints until it overflows.
2. If the area you are installing has a corner, start attaching the pieces from the corner. The corner pieces have long and short sides, so attach them alternately.
3. When attaching the flat pieces, first proceed by fitting the larger stones in place.
※point※
◎CAN'STONE has a low water absorption rate, so there is no need to soak the stone in water or apply a primer to the back of the stone before application, which were precautions when applying conventional cement-based stone. However, this does not apply to the base, so the base must be prepared according to the conditions.
◎ Installation should be done using the improved pressure-attaching method and a vibrating tool should be used.
◎To check the adhesive adhesion during installation, peel off several pieces every 2m2 and check whether the resin mortar is attached to the entire back side. If there is not enough mortar on the back side, recheck and adjust the thickness of the coating on the base, or increase the amount of resin mortar applied to the back side of the stone.
5. Processing (dimension adjustment)
Please adjust the size of the stones to ensure a good fit.
Use a diamond cutter, hatchet, pliers, etc. to cut, mill, or separate the material in the areas that are as thin as possible.
6. Joint Finishing
1. Fill the joints with our joint material MT-MEJI using a joint bag etc. In particular, in areas where the joints do not rise much when pasting, fill the joints sufficiently to about 1/2 or evenly.
2. To finish the joints, press the filled MT-MEJI firmly with a joint trowel before it hardens, then use a brush or whisk to roughly scratch the joints.
※point※
Don't worry if the trowel leaves uneven marks, just finish the job, and finally use a brush or scissors to scratch the joints in places to make them look weathered.
◎Do not install without joints.
7. Curing and water absorption prevention treatment
通風、直射日光を避け、シート張りなどで養生して下さい。施工後十分な養生期間をとり、完全に乾燥していることを確認後、ストーン表面のダストや目地のダストを十分にブラッシングしてください。その後に浸透性吸水防止剤「REPEL･S」を噴霧器又は刷毛、ローラー等で塗布して下さい。
◎CAN’STONEはセメント二次製品となりますので酸洗いは厳禁となります。
