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The application of a lime plaster can be done on various supports, such as old masonry of rubble stones, bricks, natural stones including soft stones (chalk, tufa) mounted with low resistance mortar (DTU 26.1) , constructions of rammed earth, adobe, clinker, cob, cob, hemp... For each of our products, you will find all the admissible supports on the technical sheets.
The use of a lime mortar is possible to repoint old masonry. It allows adhesion by molding to preserve the integrity of bricks or stones and dosages in accordance with traditional recipes on site.
Lime brings enormous benefits, which is why it is honoured during renovations of old buildings. Lime plasters and mortars are used for:
- Their respect for old buildings
The microporosity of the lime allows the manufacture of a mortar permeable to water vapour. Lime thus makes it possible to avoid condensation, to reject humidity and thus allows the building to breathe. It also significantly improves interior comfort.
Moreover, thanks to its bacterid properties, it limits the appearance of moulds, fungi and micro-organisms.
Lime is also impermeable to runoff water and thus protects the building from external bad weather.
- Their quality of implementation
Lime makes it possible to produce creamy products that are easy to apply and work with and have good adhesion to substrates.
- Their aesthetics
Due to its luminosity and its characteristics adapted to the specificities of old buildings, lime gives an unequaled decorative cachet to a facade for a lasting restoration faithful to tradition.Finally, associated with other biosourced materials such as hemp, lime has insulating properties, both acoustic and thermal.
If you plan to bond a window, identify the material of the window you want to install first. Common window materials are organic glass (PMMA, PC etc.) or mineral glass. A specific adhesive must be selected according to the window material.
Use Sikaflex®-295 UV for bonding organic glass into your boat and Sikaflex®-296 as a direct glazing adhesive to bond mineral glass. In order to obtain satisfactory results, consult the pre-treatment chart and prepare the surface accordingly before bonding the window.
For further details read our application guidelines and our pre-treatment chart.
You will find different variations and materials for rub rails such as GRP, paints, wood and moulded PVC, etc. Therefore a good surface preparation is key. Products needed depending on the rub rail material to be bonded.
To ensure a good final result follow the advice given in the pre-treatment chart. Common product for rub rail bonding is our assembly adhesive for marine Sikaflex®-292i or the STP based marine sealant Sikaflex®-591.
For further details read our application guidelines and our pre-treatment chart.
Winches, windlasses are subject to high mechanical stresses, fans, hatches and hatch covers to low stresses. To make sure your fittings are sealed strongly we recommend the following:
Bedding and sealing of fittings subject to high mechanical stresses
Deck fittings such as chain plates, winches and guide rollers must absorb very high dynamic stresses. For this purpose, a high-performance product, Sikaflex®-292i, our assembly adhesive, should be used in conjunction with additional mechanical fixings.
Bedding and sealing of fittings subject to minimal mechanical stresses
Deck fittings, such as ventilators and cover strips, need to be waterproofed but are not subject to high tensile or torsion stresses.
These fittings can be effectively bedded and sealed with only Sikaflex®-291i or if the joint remains visible and is exposed to weathering, then use Sikaflex®-591 or Sikaflex®-295 UV.
Check pre-treatment chart for surface preparation of substrates prior to application and follow application steps according to application guidelines.
For further details read our application guidelines and our pre-treatment chart.
To maintain the color and appearance of a new teak deck we recommend Sika’s Teak Maintenance System. It avoids damage of the caulking joint and is fully compatible with the Sikaflex®-290 DC PRO caulked teak decks.
Step 1:
Mix SikaTeak® C+B with water in a ratio of 1:3
Apply the mixture with a scrubbing brush or sponge
Leave for 10 minutes before rinsing the deck with water
Step 2:
Apply a small amount of SikaTeak® Oil Neutral on a clean cloth or a roller
Allow oil to penetrate the wood for ca. 30 minutes before removing excesses with a cloth
For further details read our application guidelines and our pre-treatment chart.
To replace damaged teak planks from the deck first completely remove the caulking from the joints around any planks that are to be removed.
Remove the damaged plank, taking care not to damage the substrate.
Remove any old adhesives, bedding or other foreign matter from the substrate and remove the jointing material from around the edge of neighbouring planks.
Use Sikaflex®-298 as a bedding compound and pre-treat the teak planks with Sika® Multiprimer Marine or Sika® Primer-290 DC prior to the application according (check pre-treatment chart). Caulk the joints with Sikaflex®-290 DC PRO the teak deck caulking material. Sand deck with a belt sander or flat plate after safe sanding time as indicated in the guideline.
For further details read our application guidelines and our pre-treatment chart.
Water intrusion between wood and deck may lead to fouling of the wood. It is recommended to control the deck periodically and repair non-tight areas before the whole deck is affected or part of the wood detaches from the deck due to the wood expansion with permanent water contact.
Deciding whether or not a wooden deck needs to be repaired is not always easy.
- First, it must be established that a joint has failed or the wood has been damaged enough to cause a problem. Each and every joint should be closely inspected. Any points at which there is a small gap or crack in the caulk should be marked with distinctive chalk.
- Second, the wood surface should also be closely examined for undue wear, gashes, splitting or splintering and should be marked with chalk in a similar way. However, parts or all of the damaged planks should be replaced, according to how badly they are damaged.
To ensure a good result after applying your teak deck download the application guideline and follow instructions thoroughly. As surface preparation is key to remove and to clean the surface of dust, dirt, grease, oil, etc. Prepare substrate according to pre-treatment chart.
For the next step, we recommend to use the bedding compound Sikaflex®-298 and to pre-treat the wood plank prior to embedding use Sika® Primer-290 DC or Sika® Multiprimer Marine. After placing the planks into position caulk the joints with Sikaflex®-290 DC PRO, Sika’s teak deck caulking material. Sand deck with a belt sander or flat plate after safe sanding time as indicated in the guidelines.
For further details read our application guidelines and our pre-treatment chart.
Products use in OE metal bonding are 1C epoxy products curing during the paint process at high temperatures which cannot be applied for repair processes. Therefore a ambient temperature curing 2C Epoxy is used.
An air pressured gun without piston could lead to extrusion of just one component or air intrusion having a negative effect on the performance. Piston type gun is a must to ensure performance.
As SikaPower®-4720 is filled in a convenient coaxial cartridge a rather high extrusion force is the result which can be lowered by warming up the cartridge before the application.
- Mutli material design does often not allow to weld anymore and requires bonding technology
- High strength steels types lose their performance if they are treated with heat -> Cold repair process with structural bonding combined with rivets lead to optimal repair performance
- Welding applications often involve hours of preparation and dismantling work whereas bonding offers an efficient repair process
- OE assembly is done using bonding technology
The slightly structured surface is caused by glass beads which ensure a perfect bond thickness of 0.3mm and prevents from over clamping.
The round bead guarantees a bond without any air entrapments to ensure optimum strength and corrosion protection.
To ensure best corrosion protection behaviour, SikaPower®-4720 is applied on both bond faces covering all grinded areas.
Yes, SikaPower®-4720 can be spot-welded within the working time.
Find out more about our working conditions