Wallpaper FAQs

  1. How long is a standard roll of wallpaper?

    The length of a roll of our wallpaper 10.05 metres (11 yards) with a width of 52cm, unless otherwise stated.

  2. Do you recommend using lining paper?

    Yes, we recommend using a good quality lining paper to cross line the walls; this gives an excellent surface on which to hang wallpaper.

  3. What do the different ‘pattern matches’ mean?

    - ‘Half Drop’ repeat is where every other horizontal repeat (from side to side) is dropped down one half of its length, i.e. the design repeats itself on the diagonal rather than the horizontal axis.
    - ‘Straight Match’ is where the pattern repeats across the roll and is positioned at the same place at each selvedge.
    - ‘Random Match’ or ‘Free match’ is where there are no pattern match points evident.
    - 'Reverse Hang' alternate lengths, is where you hang every second (alternate) length upside down

  4. Are there any specific hanging instructions for your wallpapers?

    Hanging instructions are sent with every roll of wallpaper. We recommend that your decorator reads these instructions fully before starting to hang the wallpaper.

  5. Are your wallpapers manufactured with sustainable material?

    All our wallpapers are sourced from environmentally responsible suppliers.

  6. What is the area covered by a wide width wallcovering?

    There are two different widths of wide wallcovering:

    - One roll which covers an area of 6.89sqm (74.16sqft)
    - One roll which covers an area of 13.78sqm (148.32sqft)

    The exact width of each wallcovering is specified in the Product Details table data on each product page.

  7. What is the area covered by a standard width wallcovering?

    Our standard wallcoverings cover an area of 5.23sqm (56.3sqft). Please use the Wallpaper calculator to check how many rolls you may need.

  8. How can I work out how many metres of the ‘sold by the metre’ wallpaper I need to order? Is there a calculator I can use?

    - Step 1) Firstly, you’ll need to work out the number of drops required. You can do this by dividing the width of the walls by the width of the wallpaper roll and rounding up to the next whole decimal.

    For example: If the width of the wall was 300cm and the width of the wallpaper roll was 139cm then 300÷139= 2.15, which, rounded up, makes 3 drops of wallpaper.

    - Step 2) Then, you’ll need to work out the lengths of the drop required. To do this, add the height of the wall to the height of the pattern repeat of the wallpaper before rounding up to the next whole decimal metre.

    For example: if the height of the wall was 300cm and the height of the wallpaper’s repeat was 96.1cm then 300+96.1= 396.1cm which, rounded up, makes 4m.

    NOTE: if the wallpaper has no repeat, then simply use the height of the wall, which in the example above is 300cm or 3m.

    - Step 3) Multiply the number of drops (step 1) by the number of repeats (step 2):-

    Following the above example, this is 3x4 = 12

    Add 5% onto this figure to allow for trimming and then round up to the next full metre. The final figure will be the amount of wallpaper you require.

    12+0.6= 12.6 which, rounded up, makes 13m to be ordered.

    Where the product is also a ‘sold by the pattern repeat’ wallpaper, divide the total amount of metres to be ordered (as per the calculation above) by multiples of the pattern repeat. For example, 13m divided by a sold by the pattern repeat’s repeat of 1.33m will work out to at 9.77 multiples and so this figure must be rounded up to the next full repeat, meaning that 10 repeats of 1.33m are needed.

    This calculator provides an approximate qty recommendation only. Sanderson Design Group advise that you always consult your decorator before ordering wallpaper as we cannot be held responsible for any incorrect quantities of wallpaper ordered.

  9. Can your wallpapers be recycled?

    Our substrates are responsibly sourced, however once printed none of our wallcoverings are currently recyclable.

  10. What is the reason for extra space within an untrimmed wallpaper/panel?

    All untrimmed wallpaper panels are supplied on one consistent roll length of 13.35m, which consists of 4 X 300cm panels. The extra 1.35mts is space for the roll wrap, hanging instructions and white space allowance for trimming.

  11. Can your wallpapers be hung onto lime-plastered walls?

    Lime plaster/render are commonly located in older properties. Where there is a risk of moisture being present, we would advise on sealing the wall, otherwise this moisture would most likely attack the wallpaper over time. There should be no problem hanging wallpaper over the sealed walls, especially if the walls are then cross lined to give the wallpaper a good key to hang onto. Although our non-woven wallpapers are considered more 'breathable', as soon as any paste is applied to a paper it can act as a barrier. We would therefore advise the preparation steps are followed as above and the room is kept well ventilated.

    We would also advise the avoidance of any vinyl wallcoverings as these have a Poly Vinyl Chloride layer to them which can also act as a barrier and discourage breathability in an older property.

  12. Are your wallpapers suitable for use in a bathroom? Is there a varnish/finish that can be applied to help seal it?

    We would recommend that one of our vinyl wallpapers are used in a bathroom or kitchen as this achieves a 'scrubbable' finish and protects the paper from water splashes.

    However, if you wish to use a standard or non-woven paper, this can be used with sufficient surface preparation and the application of a surface sealant/varnish. A product we have tried and tested is Polyvine Acrylic Sealant/Varnish. This is a clear varnish which is applied to the top of the paper to protect it and make it more durable. We would always recommend that a small area is tested first to ensure there is no drastic shade change to the wallpaper.

    We would never recommend hanging the paper in an area which would come directly into contact with water splashes, i.e., behind a sink or shower. We would also advise on keeping the room as well ventilated as possible to avoid damp and mildew and to never hang a wallcovering over damp wall.

  13. The print on my surface printed wallpaper seems to have a ‘smudged’ appearance, is this is a fault?

    Surface prints are printed using a “wet on wet” ink printing process whereby one ink goes down shortly after the previous coloured ink. This means that one colour has little time to dry before the next ink is printed beside it. However, this isn’t a fault, and is part of the beautiful irregularities of traditional surface printing.

  14. What do you recommend for wallpaper joins and dark ground papers with un-dusted edges to reduce the white edges?

    To reduce white edges showing when hanging dark coloured paper, it is recommended that a water-soluble crayon of the appropriate shade be used to colour the edge of the roll whilst in dry roll form prior to pasting/hanging. We can recommend the use of the Caran D'ache crayon, selecting the nearest colour to the chosen paper’s background. The crayon is available in all good art shops and online.

    These crayons can also be used where shrink back has occurred in order to help reduce the visibility of the joins.


  1. What paste do you recommend for use with your wallpapers?

    We would highly recommend the use of one of our branded pastes as these have been specially formulated to provide the best adhesion when used in conjunction with our wallpapers. However, any starch based, light, ready mixed adhesive would be suitable for our papers.

  2. What is the shelf life of your branded pastes?

    Providing the paste is stored unopened, in its original container, in dry conditions and away from frost, it should last around 2-3 years. However, once opened, the shelf life can vary as this can depend on how clean the tools were when the product was last used. The dirtier the tools the shorter the life as there is a higher chance of contamination. Generally, you should be able to tell when paste has gone off as it will have an unpleasant odour.

  3. How much paste will I need for my wallpaper?

    A 5kg tub of ready mixed light paste with no added water covers approx. 31.2m2, however this will change depending upon porosity of wall and substrate and so is merely a rough guide. This would be sufficient for:

    - 5 x 520mm wide 10m rolls
    - 4 x 686mm wide 10m rolls
    - 7 x 3m 1.4m wide panels

  4. Is thinning required?

    Thinning is not recommended when using our paste unless you’re sizing a porous wall.

  5. Do your pastes contain fungicides?

    We do not add any fungicides to our paste, although they do contain in-container preservatives for shelf life purposes.

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