Chimney top plate or cap made to measure, in stainless steel, steel or aluminium
Made in the Ventichim workshop in Zandhoven, Belgium. Choose a flat top plate or a cover with a skirt, the material and the dimensions, place the holes for the flue and the screw holes where you want them, and you see the drawing and the price per piece straight away.
1. Part and material
2. Dimensions (mm)
3. Holes
X and Y to the centre of the hole, measured from the bottom left corner.
4. Screw holes
5. Powder coating
Powder coating adds 5 working days. A one-off set-up charge of € 50 for the coating is added per order. Another RAL colour? Ask us at info@ventichim.be.
Your part
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6. Order
Chimney top plate or cap made to measure: how it works
Ventichim makes chimney top plates and caps with a folded skirt to measure, in 304 and 316L stainless steel, brushed stainless steel, galvanised steel, DC01 steel and aluminium, from 0.4 to 3 mm thick. Flue holes are cut by hand from Ø30 mm, screw holes from Ø4.5 to Ø10.5 mm are drilled. Ventichim is a wholesaler of flue systems and chimney products in Zandhoven, Belgium, supplying installers, chimney sweeps and roofers in Belgium and the Netherlands.
What is a plate like this used for?
| Application | Type | Typical layout |
|---|---|---|
| Top plate on a brick chimney | Flat plate or cover | Hole for the stainless steel pipe or flexible liner (e.g. Ø150 or Ø200), 4 screw holes in the corners |
| Cover over a shaft or casing | Cover with skirt | B × L = inside dimensions of the shaft, skirt 40 to 80 mm, screw holes in the skirt |
| Pass-through plate for a flue or ventilation duct | Flat top plate | One or more holes to size, fixing holes all round |
| Top plate for a cascade or several appliances | Flat plate or cover | Several holes at equal spacing |
Materials and thicknesses
| Material | Thicknesses | Weight per m² at 1 mm | When to choose it |
|---|---|---|---|
| Stainless steel 304/304L 2B (1.4301) | 0.4 to 3 mm | 7,9 kg | Standard for outdoor use and around flues |
| Stainless steel 316L 2B (1.4404) | 0.5 to 2.5 mm | 8,0 kg | At the coast and where condensate reaches the plate |
| Stainless steel 304 brushed, with foil | 0.8 / 1 / 1.5 mm | 7,9 kg | Visible places, neat finish |
| Galvanised steel (Sendzimir DX51D+Z275) | 0.5 to 2 mm | 7,85 kg | Indoors or sheltered, cheaper than stainless steel |
| Steel DC01 | 0.5 to 2 mm | 7,85 kg | For painting or powder coating |
| Aluminium 5754 / 1050 | 0.5 to 2 mm | 2,7 kg | Light, does not rust, not for hot flue gases |
Ordering in four steps
- Choose flat plate or cover with skirt, the material, the thickness and the quantity.
- Enter the dimensions in millimetres. For a cover, choose whether B × L is the outside size or the inside size that has to fit over your shaft.
- Place the holes (X and Y to the centre, from the bottom left) and choose the screw holes: in the 4 corners, all round or in the skirt of the cover. For a coloured part, choose a RAL colour for powder coating.
- Check the drawing and the price and order at the bottom, under 6. Order. You receive an order confirmation with the delivery time.
Frequently asked questions
How small can a hole be?
Large holes are cut by hand with a hole saw (up to Ø152) or nibbled, and are at least Ø30 mm. Smaller holes are drilled screw holes: Ø4.5 (M4), Ø5.5 (M5), Ø6.5 (M6), Ø8.5 (M8) or Ø10.5 (M10).
How close to the edge can a hole be?
There must be at least 20 mm between the edge of the hole and the edge of the plate, or the fold of a cover. Between two holes also 20 mm. The configurator tells you straight away if it is too tight.
How large can a plate or cover be?
A flat plate up to 2500 × 1250 mm. A cover is folded on a manual folding machine and can be up to 1200 mm long, with a skirt of 15 to 150 mm. We fold stainless steel up to 1.5 mm, steel and aluminium up to 2 mm.
Do I give the outside or the inside size?
For a flat plate it is always the outside size. For a cover you choose: the outside size of the cover, or the inside size that has to fit over your shaft or chimney. For an inside size the configurator adds the sheet thickness.
How are the corners of a cover made?
As standard with 20 mm tabs that are folded inwards and spot-welded, so the corner is closed and the outside size is exact. You can also choose open corners.
Which material for a chimney top plate?
Ventichim recommends 304 stainless steel for an outdoor top plate. At the coast, or where condensate from a condensing boiler can reach the plate, we recommend 316L stainless steel. Aluminium is not suitable where hot flue gases touch the plate.
Can the plate be coloured?
Yes, we powder coat in the colours most asked for on chimneys: RAL 9005 jet black, 7021 black grey, 7016 anthracite grey, 7022 umbra grey, 8019 grey brown, 8012 red brown, 9007 grey aluminium, 9006 white aluminium, 9016 traffic white and 9010 pure white, in matt textured, matt or gloss. The price per piece includes the coating; a one-off set-up charge of € 50 is added per order. Powder coating adds 5 working days.
Do the prices include VAT, and do I get my discount?
These are net prices per piece, excluding VAT and delivery. Made-to-measure work is always net: your webshop customer discount does not apply to it. The price per piece drops with larger quantities, as shown in the row under the price.
Hole table
Dimensions in mm. Large holes are cut by hand (hole saw up to Ø152, larger ones nibbled) and are therefore at least Ø30, with 20 mm to the edge or the fold and 20 mm between two holes. Screw holes are drilled. For a cover, B × L is the outside size of the top face and H the outside height of the skirt.