How Much External Cladding Do I Need?
uPVC CLADDING - COVERAGE PER LENGTH
- One 5m Length of 150mm Shiplap Cladding covers an area of exactly 0.75 Square Metres
- One 5m Length of 100mm V Joint Cladding covers an area of exactly 0.5 Square Metres
CALCULATING THE SQUARE METERAGE OF CLADDING REQUIRED
For straightforward square and rectangular areas like walls and ceilings, simply measure the length and height (walls and panels) or width and length (Ceilings) and multiply the two dimensions together.
E.g.: A wall that is 6m long and 3m high would require 18 square metres of cladding board (6m x 3m).
When cladding inside a gable, you should measure the length of the barge boards, multiply together and divide by two. For example a gable with barge boards 5m long would require 12.5 square metres of cladding board (5 x 5 = 25, then 25 divided by 2 = 12.5).
ALLOW FOR CUTS AND WASTE
There are few things more frustrating than coming towards the end of a project and running out of materials. It is for this reason that when it comes to PVC Cladding we would always suggest that you allow an extra 10% for cuts and waste. This is because it is very unlikely that you will be able to use every piece of cladding - there is almost always going to be some waste from your offcuts- pieces that are too small to use. Our experience tells us that 10% is usually an adequate enough allowance to cover this waste. So if for example you have worked out that you will need 30 lengths of cladding to do the job we would suggest that you order 33 lengths in total.
QUICK CALCULATOR
Use the chart below for a quick view of how many lengths of cladding you will need for your project. Please note that whilst we have rounded the amounts up to whole lengths, we have made no allowance for cuts and waste. As detailed above we suggest you allow an additional 10% to cover the waste element.
| Area to clad | Lengths required | Lengths required |
| (square metres) | (150mm Shiplap) | (100m V Joint) |
| 2 | 3 | 4 |
| 3 | 4 | 6 |
| 4 | 6 | 8 |
| 5 | 7 | 10 |
| 6 | 8 | 12 |
| 7 | 10 | 14 |
| 8 | 11 | 16 |
| 9 | 12 | 18 |
| 10 | 14 | 20 |
| 11 | 15 | 22 |
| 12 | 16 | 24 |
| 13 | 18 | 26 |
| 14 | 19 | 28 |
| 15 | 20 | 30 |
| 16 | 22 | 32 |
| 17 | 23 | 34 |
| 18 | 24 | 36 |
| 19 | 26 | 38 |
| 20 | 27 | 40 |
| 21 | 28 | 42 |
| 22 | 30 | 44 |
| 23 | 31 | 46 |
| 24 | 32 | 48 |
| 25 | 34 | 50 |
| 26 | 35 | 52 |
| 27 | 36 | 54 |
| 28 | 38 | 56 |
| 29 | 39 | 58 |
| 30 | 40 | 60 |
| 31 | 42 | 62 |
| 32 | 43 | 64 |
| 33 | 44 | 66 |
| 34 | 46 | 68 |
| 35 | 47 | 70 |
| 36 | 48 | 72 |
| 37 | 50 | 74 |
| 38 | 51 | 76 |
| 39 | 52 | 78 |
| 40 | 54 | 80 |