Bond new cement mixes to old concrete! With Weldbond, no hacking,
keying or Joint raking is required. Great for: Bonding new cement
to tiled, Bricked, granolithic, terrazzo floors and walls, asbestos,
breeze-blocks, roofing felt, metal, wood or for resurfacing spawled
concrete.
For porous surfaces: Thoroughly clean the surface,
vacuum if possible. Thin 1part Weldbond with 5 parts water. Apply
this sealer to old concrete and allow to dry. Now apply 3 parts
Weldbond with 1 part water. And while still tacky, apply new cement
onto concrete.
For non-porous surfaces: Apply Weldbond full
strength to the surface while still tacky, then apply new cement.
Repairing concrete floors and stairs: Give sidewalks
and patios a "tough-as-nails" quality. Make repairs
up to 1" in thickness. Weldbond withstands even trucking
conditions. Prime surface with 1 part Weldbond 5 parts allow to
dry. Working a small area at a time, coat base with 3 parts Weldbond
1 part water. While surface is still tacky, cover it with a mortar
of trowelling consistency. Use a premix cement or make your own.
To make this, wet down 3 parts sand and 1 part cement, with 1
part Weldbond and 10 parts water. Note: when finished, do not
allow work to dry out quickly. Keep covered (damp) for at least
24 hours.
Dustproofing and sealing porous concrete floors:
For a seal that's 100% dustproof, thin 1 part Weldbond with 5
parts water. For heavy traffic areas, recoat as required. This
method also prevents salt, gas and oil from attacking concrete
driveways and sidewalks. On below- grade or garage floors, leave
uncovered a 1 ft. strip along walls. This will act as a "breather
strip" in the event there is moisture present under the floor.
Terrazzo, quarry and flagstones: Seal base of
floor and tiles with 1 part Weldbond 5 parts water and allow to
dry. Before bedding tiles in sand and cement screed (sand mix
cement), give floor and backs of tiles a further coat of 3 parts
Weldbond 1 part water. While still tacky, apply sand and cement
bedding to base and bed tiles. Bedding can be from 1/8" upwards.
For brick tuck pointing: Mix 1 part Weldbond
with 5 parts water; then add mortar. To ensure an even stronger
bond, clean old mortar joints and spray or mop on a sealing mixture
of the 1 part Weldbond 5 parts water, and proceed with the mortar
mix.
Rendering over 9 mm. thickness (3.5"):
Make a slurry of 2 parts sharp washed sand and 1 part cement.
For the water portion ….. use a mixture of 1 part Weldbond
to 1 part water. Apply with trowel and allow to dry a minimum
of 24 hours. Then apply your render. |