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Calculate plinth, cornice & pelmet requirements

 

How to calculate how much plinth, cornice and pelmet are required

One of the questions we’re often asked by customers is ‘How many lengths of plinths/cornice/pelmet will I need?’ This, however, is not as difficult to work out as you might think.

In our experience, it’s always better to order a little more than is actually required (plinths are particularly useful for fillers) but we have a simple calculation to help you when you’re ordering.

Although the calculation for plinth, cornice and pelmet is similar, each product type has its own unique considerations to take in to account, so it’s important that each section of this help guide is read thoroughly before you calculate how much you need.

To calculate plinth lengths

Kitchen Unit PlinthThe first thing to do is add up all of the widths of each of your base cabinets, tall units and any integrated appliances (such as a dishwasher), so if you have planned for example, 2×300 wide base unit, 1x 400 base, 3x 500 base, 1x 600 bases and 3x 1000 base, 1×500 tall unit and 1x 600 integrated appliance  the total width is 7200mm (600 + 400 + 1500 + 600 + 3000 + 500 + 600 = 7200).

The next thing to calculate is the number of ‘returns’ you will have in your kitchen.  A return can be simply described as the end of a run of cabinets, effectively the exposed end panel of the cabinet. We recommend a nominal 600mm is added so in the example above, if you’re kitchen design features two returns, then you will require a further 1200mm (600 + 600 = 1200).  If you are using plant-on end panels then you may not require any return plinths as these panels run down to the floor and if you’ve planned some curved cabinets in to your design, then don’t worry about calculating the length of the curved plinth as we supply these manufactured  to suit the curve exactly.

Therefore to calculate the total length of plinth required for the example above:

Total Width (7200mm) + Number of Returns (2×600 = 1200mm ) = 8400mm

To calculate the number of plinths you will require for your kitchen then you will need to divide the total length by the length of the plinth available for your range (our plinths are either 2600mm, 2750mm or 3000m long – check what plinth sizes are available with the range you have selected).

So taking our example above with a range using 3000mm plinths the calculation is:

Total length (8400mm) divided by Plinth Length (3000mm) = 2.8

Therefore the requirement in this example is for 3 plinths.

To calculate cornice lengths

Kitchen CorniceThe first thing to do is add up all of the widths of each of your wall units, tall units and dresser cabinets, so if you have planned for example, 2x 300 wall cabinets, 4x 500 wall cabinets, 2x 500 dresser cabinets, 3x 800 wall cabinets and 1x 500 tall cabinet then the total width is 6500mm (600 + 2000 + 1000 + 2400 + 500 = 6500mm).

The next thing to calculate is the number of ‘returns’ you will have in your kitchen.  A return can be simply described as the end of a run of cabinets, effectively the exposed end panel of the cabinet. As cornice needs to be joined by a mitre at the corner of a return we recommend a nominal 400mm is added. Remember if you’ve included a curve in your design then you don’t need to worry about calculating the cornice for this as we supply curved cornice to suit the curve exactly.

When a tall cabinet is planned (as in this example), if the return is a full one i.e. the entire end of the tall cabinet is exposed, then we recommend adding an additional 650mm per return.

If the return is a half one i.e.  the wall cabinets run in to the tall cabinet, then we recommend adding an additional 350mm per half return.

So in the example above, if your design contains one standard return (400mm), one tall cabinet half return (350mm) and one tall cabinet full return (650mm) then you will require and additional 1400mm (400 + 350 + 650 = 1400mm).

Therefore to calculate the total length of cornice required for the example above:

Total Width (6500mm) + Number of Returns/Half Returns (1400mm ) = 7900mm

To calculate the number of lengths of cornice you will require for your kitchen you will need to divide the total length by the length of the cornice available for your range (our cornice are either 2700mm or 3000m long – check what cornice lengths are available with the range you have selected).

So taking our example above with a range using 3000mm cornice the calculation is:

Total length (7900mm) divided by Cornice Length (3000mm) = 2.63 lengths

Therefore the requirement in this example is for 3 lengths of cornice.

To calculate pelmet lengths

Kitchen PelmetThe first thing to do is add up all of the widths of each of your wall units, so if you have planned for example, 2x 300 wall cabinets, 4x 500 wall cabinets, 2x 800 wall cabinets and, 3x 1000 wall cabinets then the total width is 6500mm (600 + 2000 + 1600 + 3000 = 7200mm).

The next thing to calculate is the number of ‘returns’ you will have in your kitchen.  A return can be simply described as the end of a run of cabinets, effectively the exposed end panel of the cabinet. As pelmet needs to be joined by a mitre at the corner of a return we recommend a nominal 400mm is added. Don’t forget that you will need a return at the either side of a hob area. Remember if you’ve included a curve in your design then you don’t need to worry about calculating the pelmet for this as we supply curved pelmet to suit the curve exactly.

So in the example above, if your kitchen design contains four returns then you will require an additional 1600mm (4x 400mm = 1600mm).

Therefore to calculate the total length of pelmet required for the example above:

Total Width (7200mm) + Number of Returns (1600mm ) = 8800mm

To calculate the number of lengths of pelmet you will require for your kitchen you will need to divide the total length by the length of the pelmet available for your range (our pelmets are either 2700mm or 3000mm long – check what pelmet lengths are available with the range you have selected).

So taking our example above with a range using 2700mm pelmet the calculation is:

Total length (8800mm) divided by Pelmet Length (2700mm) = 3.26 lengths

Therefore the requirement in this example is for 4 lengths of pelmet.

 

Planning a new kitchen?

Kitchen plannerIf you are thinking of buying a new kitchen from DIY Kitchens online then why not take a look at our kitchen visualisation application here. You be able to see how a new kitchen would look in any of our styles, in the colour that you would like and even paint your walls and choose some flooring to see how your final design would look in your home!

Download our kitchen planner

Kitchen PlannerWant to plan your kitchen and create a paper plan mock-up?

Simply download the Kitchen Planner PDFs here and start measuring up slotting units into position.

Don’t forget to plan in your service voids on corner units and think about the space needed for corner posts so that all your drawers and kitchen units can open without any obstructions.


 


 

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