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Cutting insulation between rafters with the ISC 240 insulation saw

Detailed solutions for pincer constructions
cutting-insulation-between-rafters
Rafters with pincers
The following application example shows details of cutting insulation between rafters. Particularly in the area of pincers or other components, tricky situations occur time and time again. The application example shows how such details can be worked out easily and quickly with a Festool insulation saw.

    Description

    When installing the insulation between the rafters, care must be taken to ensure that the insulating material fills all hollow spaces. Therefore, the right cut is very important. Incomplete installed insulating material leads to structural damage due to condensation and mould growth. In the case of pincer constructions or other components in the compartment, the insulation between the rafters must be cut accordingly. These details can even be created quickly and easily with the ISC.

    Material list

    • Board or pasteboard (= rafter height) for template

     


    Tools/accessories

    The following tools and accessories are recommended in this application example:

    Preparation/set-up

    • Template production

      A board (OSB here) or pasteboard is cut to the rafter width (or width of the insulation between the rafters). Then mark the pincers.

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      Template production
    • Template for pincer cut-out

      Pincer width is marked on the template.

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      Template for pincer cut-out
    • Cutting the template

      Cut off the upper end with a saw.

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      Cutting the template
    • Changing the cutting set

      It may be necessary to use the longer cutting set to cut inclined cuts in the insulation between the rafters. If necessary, change the set according to the instructions in the operating manual.

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      Changing the cutting set

    Procedure

    • Measuring the compartment width

      Measure the compartment width and add extra for better clamping (1 cm here).

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      Measuring the compartment width
    • Adjusting the angle stop width

      The required dimension can be read off the scale and fixed accordingly.

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      Adjusting the angle stop width
    • Cutting insulation between rafters

      Position the insulating material on the adjusting stop and cut the insulating material with the ISC using the guide rail slide.

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      Cutting insulation between rafters
    • Measuring the remaining dimension for pincers

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      Measuring the remaining dimension for pincers.
    • Applying the remaining dimension to the template

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      Applying the remaining dimension to the template.
    • Positioning templates and cutting into insulation between rafters

      Here, the insulation between the rafters is cut directly to transfer the position marking of the templates. Alternatively, a permanent marker (Edding) can be used to make the markings – cutting is no longer necessary.

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      Positioning templates and cutting into insulation between rafters
    • Positioning for bevel cut

      The template can also be used to make the bevel cut.

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      Positioning for bevel cut
    • Making the bevel cut

      The template can now be used as a guide when cutting.

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      Making the bevel cut
    • Pincer recess

      The cut-out for the pincers is now made on the counterpart. The template can also be used here for positioning.

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      Pincer recess
    • Pincer recess

      Cutting the recess freehand with the ISC.

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      Pincer recess
    • Installation part 1

      After cutting the insulation between the rafters, the cut parts can be installed.

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      Installation
    • Installation part 2

      After cutting the insulation between the rafters, the cut parts can be installed.

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      Installation
    1. Our illustrated guides and work results are documented working steps that we have performed in practice. They are individual examples and do not guarantee or promise that users will obtain the same results. The results will depend on the user's experience and skill, as well as the material being used. Illustrated guides do not replace any Festool operating manuals and/or safety instructions. Liability for ensuring that the information, instructions and applications are free from content defects and defects of title, in particular with regard to the absence of defects, correctness, freedom from third party intellectual property rights and copyrights, completeness and fitness for purpose, is excluded. Claims for damages made by the user, regardless of their legal basis, are excluded. These liability exclusions are not applicable if the damage was intentional or caused by gross negligence, or in cases of statutory liability.

      We cannot accept liability for damage resulting from defects.