ကြွေပြား မကပ်မှီး မျက်နှာပြင် လေ့လာခွဲခြမ်းခြင်း

၁.၁  ကွန်ကရစ်မျက်နှာပြင် ညီညာမှု ရှိမရှိ သိရှိစေရန် ၂မီတာခန့် ရှိသာ ပေတံ ဖြင့်စစ်ဆေးနိုင်ပြီး ပေတံ သားနှင့် ကွန်ကရစ်သာ ဟနေမှု မရှိစေရ

• အကယ်၍ ဟနေသောအပေါက်များ ရှိပါကလဲ, ၅ မီလိမီတာ ထက်မကြီးစေရ
• လူးသွားလူလာများနိုင်သည် ဧရိယာ သို့ အသင့်ဖောျ်ပြီးသား ကြွေပြားကြပ်ကော် အသုံးပြုမည့်ဧရိယာများ အတွက် ၃ မီလီမီတာထက် မပိုရ

၁.၂ အကယ်၍ စံသတ်မှတ်နှုန်းထားထက် ၈၀% ပိုနေပါက ၄င်းအခြေအနေကို ပုံမှန်အနေအထားဖြင့် သတ်မှတ်နို်င်သည်။ စံသတ်မှတ်နှုန်းထား ၂၀% အထက်သာရှိပါက ထို ဧရိယာကို weber.neo latex အသုံးပြုပြီး မျက်နှာပြင် ညှိုခြင်း လုပ်ငန်းကို  လုပ်ဆောင်းသင့် ပါသည်။

2.1 This check mainly concerns wooden floors laid on joists or battens, wooden panels and, more rarely, partitions.

သစ္သာ ျပားျဖင့္ 

2.2 The flooring strips or wooden panels should not move when they are stepped on.Partitions should not flex when press by hand.

2.3 If this is not the case, reinforce the floor, replace the boards, or brace unstable partitions.

3.1 Check the surface hardness by scratching it with a pointed tool e.g. a nail, in several places.

• The scratch has to be superficial.
• If the surface peels off, it is not hard enough for tiling.

3.2 Plaster walls should be brushed with a stiff brush and then wiped to remove any loose material. Also check the in-depth hardness of existing screed or plaster walls.

3.3 The defective surfaces have to be removed until sound material is reached.

4.1 Pour a little amount of water onto the substrate.

4.2 If the water is absorbed in less than 1 minute, the substrate is considered as excessive porous and requires priming.

5.1 Check the adhesion of existing tiles by tapping with a hammer.

5.2 Any hollow sounding tiles or tiles with poor adhesion have to be removed.

5.3 Replace by similar tiles or tiles with the same pro-perties.

1. To check the adhesion of existing paint, carry out a cross-hatch test using a suitable knife or cutter.

2. Score the paint in small 2 x 2 mm squares over a total area of 10 x 10 cm. Use transparent tape to stick onto the area and then pull off quickly.

3. The paint is considered suitable for tiling if 80% of the area of the small squares remain bonded. If not, the paint has to be removed mechanically.

6.1 Eliminate any traces of plaster with a scraper. Carefully remove any dust and any other stains.

• Apply weber.prim 2 primer, if necessary, on existing tiles, paint, wood or PVC tiles to increase the bonding property.
• When do the tiling on existing paint, remove any traces of varnish or wax and apply weber.prim 2 primer to ensure a good adhesion.

6.2 For cement, light-weight concrete or gypsum-based substrates; a primer to decrease water absorption should be applied.

• To check the humidity of the substrate, wipe it until dry and then use a humidity checking device.
  • Plaster substrates and the substrates for tiling should not have more than 3% residual moisture during application depending on the ambient conditions, the residual moisture could last longer than 2 weeks - several months in some conditions.
  • The residual moisture of anhydrite substrates (with the mixture of calcium sulfate) should be less than 1%, and less than 0.5% for PVC substrates.