SFS, Y-Wall, EPDM and Tyvek

Is the condition of the SFS to a satisfactory quality?

Are there any screws missing in the system?

Has rust or corrosion affected the system including the fixings condition?

Any special constructions such as movement joints or sliders in good condition and able to support the new cladding?

Is the mineral wool infill in good condition and not missing in pockets?

Are other structural systems such as steel columns and posts in good condition?

Is the blockwork, slabs and sheer walls in good condition?

Next task may commence?

Are the fixings used to the latest Rev fixing schedule?

Is a 2-5mm gap maintained between boards?

Is 12-15mm edge distance for the screws maintained around the perimeter of the board?

Are fixings vertically no bigger distances apart than 300mm and horizontally no wider apart than 600mm?

Are fixings in the corner 50mm in from the bottom and top edge of the board as shown in 'Detail A' on the installation guide?

Has fire rated sealant and daffa tape been applied to all the edges of the sheathing board?

Any additional holes in the sheathing board sealed?

May the next task commence?

Has the correct EPDM membrane been used as shown in drawings?

Are all substrates clean and free from grease, dust or anything else that can affect the bonding of the membrane?

Has primer been used to porous surfaces?

Has the sequence of the membrane been installed correctly as shown in the installation guide? (Cill -> Jamb -> Head)

Has the adhesive paste been applied to both the frame and the substrates then spread for an even seal?

Is the membrane applied flat without creases?

Has a further bead of adhesive been applied around the perimeter of the membrane then tooled off ensuring no open edges?

Has a minimum of 100mm overlaps been maintained?

May the next task commence?

Has the products been kept in a dry and out of direct sunlight location?

Is double sided tape applied first to temporarily fix the tyvek to the substrate?

Are minimum vertical laps of 150mm achieved and taped back?

Are minimum horizontal laps of 100mm achieved and taped back?

Does the membrane extend 100mm minimum below the lowest structure to ensure maximum coverage?

Any holes in the tyvek taped and sealed?