Frequently asked questions
How do I work with Flexim?
Remove the top cover from the packaging and place this upside down next to the bottom.
Cut open the required number of strips using a cutting knife.
Take the Flexim strips out of the plastic packaging and place the strips in the cover. Use 1 latex glove for this.
Place the bottom on top of the cover and take the Flexim product with you onto the roof in the box packaging.
Put on 2 latex gloves and then knead the Flexim strips firmly onto the uppermost row of roofing tiles. Repeat this until all of the strips of Flexim have been placed on the roofing tiles.
Take the gloves off and press the ridge tile firmly into the Flexim with your clean, bare hands. Make sure the ridge tile is not pressed all the way down to the ridge board, but that it “hovers” at least 1 cm above this. If you don’t have a ridge board, then make sure there is sufficient space between the ridge tile and the uppermost row of roofing tiles.
Pull on one latex glove and cut off the excess Flexim using a spatula or a knife.
Spread the Flexim smooth until you have obtained an even finish.
How long can I keep Flexim?
If Flexim is used to secure ridge tile, do I still need to screw them down?
It is important to assure proper anchoring of the roofing tiles and ridge tiles on the roof. This means that the ridge tiles must be secured to the ridge board using a stainless steel screw. Please note: the ridge tiles must not be affixed tightly against the ridge board; they must “hover” above the ridge board by at least 1 cm [0.4 inch].
Do I need a ridge board to attache the Ridge tiles when using Flexim
Roof repair: Flexim is used as a repair product for improving the bond between the ridge tile and roofing tile and for preventing (possible) leakage on and around the tiled roof.
If you are going to use Flexim as a repair product, it is necessary to install a ridge board and then affix the ridge tile mechanically to this.
Roof renovation or new construction: if you use Flexim for renovation or new construction, then we recommend that you install a ridge board if this is not present. The ridge tiles can then be mechanically attached to the ridge board for extra security. Make sure that the ridge tile is always attached to the ridge board using a stainless steel screw with a plastic washer.
Should I wear gloves when working with Flexim?
Using the gloves is important because Flexim is a paste product that enhances the bond between the ridge tile and the roofing tile. By using gloves, your hands stay clean.
Can I use Flexim to repair a sagging or ripped flashing?
I have old mortar/cement between the ridge tile and the roof tile and now pieces are falling out in a few places. Can I fill up the openings/gaps/seams with Flexim?
I spilled Flexim on a roof tile during the work. What's the best way to clean this?
Can I paint over Flexim?
Can I use Flexim if it's freezing outside?
Can I use Flexim when it is raining?
We do not recommend using Flexim when it is raining. Flexim is immediately water repellent, but if the roofing tile is wet or moist, this can affect the adhesion. If the ridge structure lies open and it starts to rain heavily, water may remain behind the Flexim product. This also causes a negative effect on the product and on the adhesion between the ridge tile and roofing tile.
Can I use Flexim on old, used roofing tiles?
Yes, Flexim can be used on older roofing tiles and it adheres very well to ridge tiles. Make sure that the used tiles or ridge tiles are dry and free of dust and grease! Because of the age of used tiles, they can sometimes be dirty and we therefore recommend roughening up the inside of the old ridge tiles with a wire brush. This helps ensure an optimum bond between the Flexim roofing mortar and the roofing tile or ridge tile.
Can I use Flexim on my chimney top?
Do the roof tiles need to be wetted before Flexim is applied?
How long is Flexim Roof Mortar guaranteed for?
Flexim International B.V. guarantees Flexim roofing mortar as a sealing and adhesive material for a period of 10 years. This guarantee applies only if the Flexim roofing mortar is used as a sealing product for ridge tiles (roof ridges and hips) for new construction (both ceramic and concrete), and applied in accordance with our application instructions. Liability under the terms of this guarantee is limited at all times to the purchase price of the product.
Is Flexim hazardous to health?
How can I keep birds from getting under my roof tiles or ridge tile?
Now and again, birds can make nests under the roof and other rodents try to get inside via the roof. Flexim can be used to close off seams, gaps or holes in the roof to prevent this from happening.
Packing & Consumption
What is Flexim Roof Mortar made off?
Composition : Linseed oil, Polystyrene, fibers and pigments