All our products are inspected by us when they arrive at our depot and prior to despatch to the customer. We dress each item individually and hand finish to remove all burrs and excess material prior to packing. Cast iron is especially vulnerable to cracking if subjected to impact so we inspect each item for cracks and any defective items are disposed of. We allow for a small amount of deviation in the finish of cast items but discard any items with significant faults. Our hit and miss vents are tested to ensure they work and move easily between open and closed positions.
If our products require painting, we apply one coat of 3 pack primer followed by one coat of professional 2 pack epoxy black gloss. Items are then either left 48 hours or infrared heated and left at least 24 hours to cure before packing. The painting on our cast iron air bricks and grilles will require regular maintenance and items we supply painted should only be regarded as cosmetically finished. To prevent rust forming customers will need to regularly repaint grilles.
We do not import any of our products as we source all our products from UK foundries .
Although we are not an ISO 9001 company we understand how important quality is and seek to exceed the expectation of each and every customer with the products we sell. We have supplied air bricks to well known companies, many of which are household names and our grilles have been installed in especially sensitive buildings around the UK.
Free area vs Equivalent Area
We quote free area for all our products and this is especially useful comparing how much area is allowable for the ventilation to flow through it in mm2. It’s really useful for comparing one product with another and customers can clearly see that a 5,000mm2 vent will supply only half as much vent as a 10,000mm2.
It’s our opinion that the free area of the air bricks we sell is broadly similar to the equivalent area so we would urge customers to use the free area we quote when considering cast iron vents and air bricks. There is a spec from government quoting calculations but we think equivalent area really applies to mass produced ventilation products where every item pressed from a machine will be identical. But this can’t possibly be quoted for cast iron grilles. These grilles are hand poured into unique moulds where each grille is different so the dimensions for each hole or slot and more importantly, the coefficient of friction of each hole and slot are different.
Remember though that this is just our opinion so your local representative will need to take a view regarding approval. Please quote webpage and us to your building surveyor, architect or building control officer. We hope they’ll agree with us and allow you to use our quoted free area for the product as representative of the equivalent area. Please email us with any comments or references you have that are specific to cast iron ventilation products so we can update this page with any developments or links to references.
OUT OF SCOPE DECLARATION
for Safety Data Sheets (SDS); CE Marking and EN 1090-1
We , The Cast iron air brick company, of –
Bowhill Farm,
Bradnintch,
Devon EX5 4LH
Declare under our sole responsibility that all the cast iron products supplied by our organisation as shown on website www.castironairbricks.co.uk and in our brochure are out of scope of the following directives where required by legislation or British standards:
Safety Data Sheets (SDS); CE Marking and EN 1090-1
The Cast iron vents, air bricks, grilles, drainage gratings and coal hole covers are supplied to us by UK foundries but are none structural and therefore EN1090-1 and CE marks are not applicable.
The plastic ducting (Rytons UK) and plastic channels (Manthorpe UK) for our cast iron Quatrefoil gratings may or may not be in scope, please contact the relevant companies should confirmation be required for these items.
Company Name – Cast iron air brick company
Name – Adrian Budd
Position – Owner
Signed: A Budd Date: 29/10/2025
