Ref - bondtec.com.hk

1 _____ BONDTEC CHEMICALS (FAR EAST) LIMITED Room 1505, 15/F, HK Worsted Mills Ind. Bldg., 31-39 Wo Tong Tsui Street, Kwai Chung, , Hong Kong. Tel: (852) 2409 9782 Fax: (852) 2406 8284 E-Mail: Website: Typical Waterproofing Method Statement (Bondtec Mapelastic) 1. Hack off loosed and defective area. 2. Remove all cement laitance, flaky parts and traces of powder, grease, oil and form release agents by sand-blasting, or wash down with high-pressure water jets. 3. Seal up the cracks and repair the defective area. 4. Smoothen the irregular concrete substrate by Bondtec SB33 Mix A if necessary. SB33 5. Flatting the rough surface of the existing foam prior by applying the first coat primer of Mapelastic. Mapelastic . 6. While the primer is still tacky, apply one layer of Mapelastic cementitious waterproofing slurry with the polyester woven reinforced fabric on the defective area.

2 Mapelastic , 7. Apply second coat of Mapelastic waterproofing slurry in cross brush method. Mapelastic . 8. Allow the waterproofing slurry to cure and apply Bondtec SB33 Bonding Primer Mix Bonding Primer Mix: Cement (OPC) 1 part Bondtec SB33 parts Coverage: Approx 3 to 4 of Bondtec SB33 depends on concrete substrate roughness Bondtec SB33 : 1 Bondtec SB33 ( ) 9. Apply Waterproof Render Bondtec SB33 mix A on top whilst the bonding primer still tacky Bondtec SB33 Mix A Cement (OPC) 50 kg Sand (Zone 2) 125 kg Bondtec SB33 9 litres Water 9 10 litres (to working consistency) Bondtec SB33 , Bondtec SB33 _____ BONDTEC CHEMICALS (FAR EAST) LIMITED Room 1505, 15/F, HK Worsted Mills Ind.

3 Bldg., 31-39 Wo Tong Tsui Street, Kwai Chung, , Hong Kong. Tel: (852) 2409 9782 Fax: (852) 2406 8284 E-Mail: Website: Bondtec SB33 : : (OPC) 50 kg ( )) 125 kg Bondtec SB33 9 Litres 9 10 Litres 10. Provide mechanical key on top of waterproofing render by wood trowel float finish. 11. Allow the waterproofing c/s render fully cure and thin bed tile fixing method lay on top. , . 12. To minimize efflorescence effect, apply Bondtec SB33 thin bed tile fixing mix as follow: Cement 50 kg Fine silica sand 50 kg Bondtec SB33 5 litres Water 5-6 litres (to working consistency) Bondtec SB33 : (OPC) 50 kg ( )) 50 kg Bondtec SB33 5 Litres 5-6 Litres 13. Spread the thin Bed mortar mix evenly on top of waterproofing render and set the mosaic tile into place.

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