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Lining the inside of a Van with Fibreglass

Discussion in 'Tech Tips and Advice' started by CA-Nick, Jan 27, 2015.

  1. CA-Nick

    CA-Nick Administrator Staff Member

    Line the van with plywood and Make sure the plywood is completely dry and that working temperature is 20-25deg C with ventilation, as working in a confined space vapour masks are advised.

    Apply a coat of G4 to the plywood as a bonding primer for the polyester resin. . Polyester resins are not adhesives, and whilst they do (or do not) bond to many substrates G4 increases the adhesion due to its chemical similarity. However whilst applying G4 is by far the better system,
    Once the G4 sealer has cured, within 4 hours applying (tacky to touch), layers of 450 c.s.m. can be applied, best cut one meter square pieces or to the length of the van before you start to make the lay-up process easier to handle and don’t mix more resin than you need at once about 2 - 4 kg/ltr at a time is normally a good workable amount.

    The usual amount of catalyst added resin is 1 - 2% depending on the temperature you are working in, if you find the resin is curing too fast due to hot weather, cut down the amount of catalyst accordingly, never go less than 1% as curing will not take place effectively.

    After mixing catalyst thoroughly into resin, paint a coat onto working area then place fibreglass matting over, then paint resin over, using a paddle roller, roll over area, flattening matting and eliminating any air pockets, stipple any rouge strands into place. Apply first layer over surface overlapping each layer by approximately 3 inches, then apply second layer again with 3 inches over-lap but stagger the joints away from that of the first application, best method is applying wet-on-wet, if you do leave laminate for more than 24 hours make sure you abrade and wipe with acetone to sensitize surface.

    When the layers of 450g matting and resin have cured, sand down any rough or sharp protrusions and check for dry mat or gaps, if you are satisfied with your work sand lightly and wipe with acetone prior to applying the flowcoat finish, again only mix a workable amount at one time (2 - 4 kg) and add 2% catalyst.

    Make sure you apply at recommended thickness of .4-.6mm thick, do not spread too thin, basically 1 Kg of Flowcoat should spread 1.5 sq mt. it should be thick enough so that you have a good colour with no fibreglass showing but thin enough so that granules do not sink if using a non –slip version.

    You can choose from a wide variety of colours and we also have a non slip version.

    This advice and information is given in good faith for guidance only. and is given without warranty, users should determine information given and using their own judgment to determine suitability.

    To reassure our customers - all materials supplied by East Coast Fibreglass Supplies are of the finest quality, manufactured by companies such as Scott Bader, DSM, Owens Corning to name but a few, who all have supplied materials into the Composites industry for many years on a global scale. Samples from every batch manufactured are retained for testing, should the need arise

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