This primary school development, Led by Bob Stones, Contract Manager for Rees Flooring is a prime example of the Schönox
® range in use.
Using hygrometers, several moisture tests were undertaken to establish the moisture content of the sub-floor and whether a damp proof membrane would be required.
Being a working construction with many different trades onsite, testing had to be undertaken over a 4 week period when rooms and corridors where floors were to be laid, were released.
The readings were between 76%RH & 88%RH so
Schönox® SDG DPM was advised for damp proofing the entire sub-floor.
Schönox® SDG is a rapid drying liquid DPM which can be used up to 90%RH after applying 2 coats. It requires no additional primer before screeding, and so was ideal for this project, as Rees Flooring was then able to damp-proof and screed all on the same day.
Before the DPM was installed it was decided with help from the Schönox
® technical team, to tackle the construction joints with a polyurethane (PU) adhesive system:
Schönox® PU900. This allowed for a quick solution when time is critical, as is often the case on such installations.
Schönox® PU 900 adhesive was poured into the joints and spread 2 inches either side, using a wire mesh for reinforcement.
Schönox® SHP primer was then used on top to allow a good adhesion for the latex levelling compound to be used.
As the subfloor on the first floor was very uneven, giving a wave like effect, an effective levelling compound laid up to at least 8mm was required.
Schönox® LC was ideal as it can be used up to 20mm without bulking out.
Schönox® LC levelling compound was used at between 8-10mm on the first floor, and on the ground floor at 5mm. Finally,
Schönox® Emiclassic adhesive was used to bond all safety vinyl sheets.