Your home’s facade is exposed to external weather conditions, which can lead to cracking, moisture ingress and surface deterioration over time. When preparing surfaces for rendering, sealing joints or addressing waterproofing requirements on external walls, it is important to select products that are appropriate for the intended application and site conditions.
This DIY facade product guide is designed to help identify common exterior scenarios and provide information on suitable Sika solutions for repairing, sealing and protecting external facades. Select one of the questions below to explore relevant Sika product options for your specific application.
How to waterproof the facade?
Sika® Water Sealer is a water repellent for walls that protects external surfaces from rain and water penetration. It improves durability and protects against weather damage.
Apply from the bottom up using a brush, low pressure garden spray or roller. Ensure the whole area to be treated is saturated until the surface no longer absorbs. Apply the second coat while the first one is still damp.
Refer to the Product Data Sheet for detailed application instructions.
Sikagard®-700 S is a high-performance water repellent impregnation that penetrates deep into cementitious substrates to provide durable water repellence. It also reduces dirt penetration and efflorescence improving the aesthetic appearance of the facade for longer.
Apply using low pressure spray, brush or roller, working from the bottom up taking care not to let the product run. Apply subsequent coats while the previous coat is still wet.
Refer to the Product Data Sheet for detailed application instructions.
How to get an improved key for rendering on external surfaces?
EVERBUILD 507 RENDAGRIP® is a render bonding agent that provides improved adhesion before applying render to external surfaces like concrete, brickwork and blockwork. It creates a textured, high grip surface that ensures new render bonds securely to the facade.
Use 1 coat only of the product. Apply using a short pile roller or brush to give an even coating.
Refer to the Product Data Sheet for detailed application instructions.
How to seal facade joints?
Sikaflex®-11 FC Purform® is a versatile adhesive and joint sealant that provides durable, weather resistant seals for facade joints. It has high movement capability and bonds well to all building materials making it ideal for sealing joints in external walls.
Apply masking tape where neat or exact joint lines are required. Prime the surface as recommended in substrate preparation section of the Product Data Sheet. Open the seal on the top of the cartridge or open the end of the foil pack, fit the nozzle and cut it to the desired bead size. Insert the product into the sealant gun. Apply the sealant into the joint ensuring that it comes into full contact with the sides of the joint and avoiding any air entrapment. As soon as possible after application, tool the sealant firmly against the joint sides to ensure adequate adhesion and a smooth finish.
Refer to the Product Data Sheet for detailed application instructions.
Sikaflex® PRO-3 Purform® is a polyurethane joint sealant for horizontal and vertical exterior joints. It has high movement capability, high resistance to weathering and good durability, making it perfect for sealing external facade joints.
Apply masking tape where neat or exact joint lines are required. Prime the surface as recommended in substrate preparation section of the Product Data Sheet. Cut the top of the foil before or after inserting into the sealant gun. Fit the nozzle onto the sealant gun and cut the nozzle to the required bead size. Extrude the product into the joint ensuring that it comes into full contact with the sides of the joint and avoiding any air entrapment. As soon as possible after application, tool the sealant firmly against the joint sides to ensure adequate adhesion and a smooth finish.
Refer to the Product Data Sheet for detailed application instructions.
How to anchor objects to an external wall?
Sika AnchorFix®-1 is a fast curing anchoring adhesive for anchoring objects into masonry, concrete and brickwork. It provides a strong and secure hold for items like brackets and fixtures on external walls.
Drill a hole with an electric drill to the diameter and depth required. Clean the drill hole thoroughly according to the instructions on the Product Data Sheet. Once attached to the applicator gun, pump out the adhesive until the product appears uniform. Do not use this material. Slowly inject the adhesive into the hole starting from the back while slowly drawing back the nozzle. Insert the anchor fixing with a rotary motion into the hole. During the hardening time do not move or load the anchor.
Refer to the Product Data Sheet for detailed application instructions.
Sika AnchorFix®-2 is an anchoring adhesive for high loads. It is specifically designed for anchoring heavy objects into masonry, concrete and brickwork. It provides a strong and secure hold for heavier items.
Drill a hole with an electric drill to the diameter and depth required. Clean the drill hole thoroughly according to the instructions on the Product Data Sheet. Once attached to the applicator gun, pump out the adhesive until the product appears uniform. Do not use this material. Slowly inject the adhesive into the hole starting from the back while slowly drawing back the nozzle. Insert the anchor fixing with a rotary motion into the hole. During the hardening time do not move or load the anchor.
Refer to the Product Data Sheet for detailed application instructions.
How to repair cracks in a facade?
Sikadur®-33 is a structural epoxy adhesive that can be used for sealing cracks in concrete and masonry.
Unscrew and remove the cap from the cartridge, pull out the plug and screw on the static mixer. Place the cartridge into the gun and squeeze the product directly into the cracks.
Refer to the Product Data Sheet for detailed application instructions.
Sikadur® Crack Repair Kit is a concrete crack repair system for repairing and sealing small cracks in concrete and masonry facades.
Follow the instructions on the Product Data Sheet to prepare the injection resin and applicator tool for application. Apply the resin to the base of the injection ports and fix them to the crack. Apply the resin over the crack between the injection ports. Use wooden applicator to smooth the surface. Leave to cure. Inject resin into the lowest port. When resin begins to flow from the adjacent port, close off the first port and disconnect the injection cartridge hose. Reconnect injection cartridge hose to the second port. Inject resin until resin starts to flow from the third port. Repeat the process working along the length of the crack until the complete crack has been injected. Leave to cure fully. Using a grinder or similar appropriate tools remove the injection ports and crack sealer.
Refer to the Product Data Sheet for detailed application instructions.
How to fill voids around doors and windows?
Sika Boom®-180 is a general purpose expanding foam designed to fill gaps and voids around doors and windows. It is simple and easy to apply with its applicator nozzle making it ideal for DIY projects.
Pre-dampen the substrate with clean water. This ensures that the foam cures properly and also prevents unwanted foam expansion. Shake the canister well for a minimum 20 times before use (you must shake the canister again if not used for a long period). Screw the nozzle firmly onto the thread of the valve without pressing the trigger or the valve. To ensure proper flow, hold the canister upside down while dispensing. Dispense the foam by pressing the trigger. Allow each layer to expand and harden sufficiently before pre-dampening with water again for next layer application. Fill deep joints in several layers. Fill smaller voids and cavities only partially as the foam expands during curing.
Refer to the Product Data Sheet for detailed application instructions.
Sika Boom®-580 is a polyurethane expanding foam that fills and seals gaps around window and door frames while also helping to improve thermal and acoustic insulation. It is applied with a dispenser gun.
Pre-dampen the substrate with clean water. This ensures that the foam cures properly and also prevents unwanted foam expansion. Shake the canister well for a minimum 20 times before use (you must shake the canister again if not used for a long period). Screw the canister onto the thread of the application gun. To ensure proper flow, hold the canister upside down while dispensing. Dispense the foam by pressing the trigger. Allow each layer to expand and harden sufficiently before pre-dampening with water again for next layer application. Fill deep joints in several layers. Fill smaller voids and cavities only partially as the foam expands during curing. Before removing the canister from the application gun, expend any material left in the canister into a container for safe disposal. Removing the canister without emptying it first may lead to foam splashes.
Refer to the Product Data Sheet for detailed application instructions.
EVERBUILD THERMOFOAM® is a thermal insulation foam that is formulated to give an airtight seal to reduce heat loss and improve energy efficiency in buildings. It provides excellent long term thermal and acoustic insulation.
Moisten surfaces to be sealed with water to assist in the curing process. Shake can well before use and before attaching to the gun. Remove black cap and screw gun carefully onto the black adapter of the can. Always use with the can upside down. The trigger should be depressed gently to control the foam release. Moisten released foam evenly. In large cavities moistening layer-by-layer is recommended. Inadequate wetting, and overfilling cavities, can cause undesirable subsequent foam expansion. The foam expands by around 30%. Once cured, foam can be removed with a knife or scraper.
Refer to the Product Data Sheet for detailed application instructions.
Sikaseal®-174 is a silicone sealant for window and door frames. It is flexible, has very good resistance to UV and weathering, and is non-sag helping to maintain a secure and watertight seal.
Apply masking tape where neat or exact joint lines are required. Prime the surface as recommended in substrate preparation section of the Product Data Sheet. Open the seal on the top of the cartridge, fit the nozzle and cut it to the desired size. Insert the product into the caulking gun. Apply the sealant into the joint ensuring that it comes into full contact with the sides of the joint and avoiding any air entrapment. As soon as possible after application, tool the sealant firmly against the joint sides to ensure adequate adhesion and a smooth finish.
Refer to the Product Data Sheet for detailed application instructions.
Sikaflex®-11 FC Purform® is a versatile adhesive and joint sealant that provides durable, weather resistant seals for window and door joints.
Apply masking tape where neat or exact joint lines are required. Prime the surface as recommended in substrate preparation section of the Product Data Sheet. Open the seal on the top of the cartridge or open the end of the foil pack, fit the nozzle and cut it to the desired bead size. Insert the product into the sealant gun. Apply the sealant into the joint ensuring that it comes into full contact with the sides of the joint and avoiding any air entrapment. As soon as possible after application, tool the sealant firmly against the joint sides to ensure adequate adhesion and a smooth finish.
Refer to the Product Data Sheet for detailed application instructions.
How to repair holes in concrete, stone and brick?
EVERBUILD® JETCEM® RAPID is a fast setting repair cement that is ideal for quickly repairing holes and cracks in concrete, brick and stone. It sets rapidly, allowing you to complete repairs efficiently.
Wet the surface to improve adhesion. Add 3 parts powder to 1 part clean cold water and mix immediately to form a smooth, thick paste. The mixed cement will only remain workable for 5-10 minutes. Press the cement into the area with a trowel or filling knife.
Refer to the Product Data Sheet for detailed application instructions.
EVERBUILD® JETCEM® DEEP is a rapid setting repair cement ideal for repairing holes in concrete stone and brick facades. It’s easy to use, fills deeps holes in one application and sets in just 30 minutes.
Wet the surface to improve adhesion. Mix 3 parts of the powder with 1 part clean cold water and mix immediately to form a smooth, thick paste. The mixed cement will be workable for only 5-10 minutes. Press the cement into the repair with a trowel or filling knife.
Refer to the Product Data Sheet for detailed application instructions.
Sika MonoTop®-112 MultiUse Repair is a concrete repair mortar for restoring and repairing damage concrete walls and facades.
Mix the product with a low speed hand drill mixer with the recommended amount of water as stated on the Product Data Sheet. Thoroughly wet the surface to improve adhesion, taking care to ensure surface pores or pits do not contain pools of water. Apply the mortar with a trowel. First make a scratch coat by firmly scrapping the repair mortar over the substrate surface to form a thin layer. Build up layers from bottom to top by pressing the mortar well into the repair area. The surface can be finished with a sponge trowel a few minutes after application as soon as the mortar starts to stiffen.
Refer to the Product Data Sheet for detailed application instructions.
Sikadur®-31+ is a structural bonding and concrete repair adhesive that can be used for repairing holes in walls. It is thixotropic, easy to mix and apply and has very good adhesion.
Mix the product according to the instructions as stated on the Product Data Sheet. Apply the mixed adhesive to the prepared surfaces with a spatula, trowel or by gloved hand. Use temporary formwork as required.
Refer to the Product Data Sheet for detailed application instructions.
