Frequently Asked Questions

No, Strongdor are a supply only manufacturer and therefore unfortunately don't offer site surveys. However we can recommend local installers in your area from our Doorfit Network, who will be happy to help. Complete our quotation request form and mention you are looking for installation and we will put you in touch!

To manufacture the best fitting door, Strongdor will require the structural opening (Brick to Brick) of the doorway width and height. We will make the necessary fitting allowances on the size of the door frame. If the opening is wider at the top than the bottom or vice versa, please give us the width at the narrowest point. Expandable sides are provided as standard and give up to 18mm of flexibility each side.

It is the customer’s responsibility to ensure all details within the sales quotation / sales order meet the exact specification and / or original enquiry and are compliant with current building regulations including location and method of installation. We are here to help and advise. Strongdor cannot accept responsibility for discrepancies after the order is confirmed. All quotes are valid for 30 days from the date of issue. Refer to Strongdor Ltd Terms and Conditions section 2.

For any door that is installed within 5km of the coast, we recommend that you talk to one of the sales team about specialist door coatings.

Please ensure you advise our sales team when making your initial enquiry and they will quote accordingly.

There is lots of information about the door properties on the website – especially on the downloadable technical specification sheets. However, if you have any question please do not hesitate to give us a call and speak to one of our door experts. They will be very happy to guide you through the range and assist you in selecting the door that is most suitable for your specification.

No, Strongdor is a manufacturer only. Should you require installation services, please advise our sales team before they raise a quote. They will be able to put you in touch with one of our approved door installation agents who will be very happy to quote for a supplied and installed Strongdor.

Our aim is deliver all orders on time in full, but there will sometimes be delays for reasons outside of our control. Strongdor cannot accept liability for failed or delayed delivery and will always try and redeliver within a reasonable amount of time. Refer to Strongdor Ltd Terms and Conditions section 5, and Strongdor Important Information booklet.

It is your responsibility to check the products on delivery before signing for the goods. Any claims for damaged goods after they have been delivered and signed for, are not covered.
Refer to Strongdor Ltd Terms and Conditions section 5, and Strongdor Important Information booklet.

This is quite a common issue and it is because of the way we pack the doors. We pack the expanding side channels down the side of the doors before we wrap them. This makes the doors appear too wide but when you unpack them it will be clear that the channels are separate and need to be fitted to the door during installation.

In a single door the keys are cable tied to the door frame. In a double door set you will find the keys in the fixing kit located in the door frame.

We recommend using the services of a professional installer – or if you intend to install the doors yourself we have helpful videos for professional installers available on our website.
We also have an installation guide which is included in our fixing kit with all door orders or available as a PDF or downloadable from our website.
If you have any questions we have a dedicated customer service team on hand to provide assistance – please call and ask to speak to the Customer Service Team.

Please contact one of our steel door experts or alternatively a member of our customer services team who will be able to help.

All our doors are custom made in our manufacturing facility in Lancashire. Whilst we do not offer stock doors, our industry beating lead time means we aim to deliver our standard Firedor, Steeldor ranges in under 3 weeks.

We are a supply only manufacturer, working with a range of customers; from steel door expert installers to main contractors, and even end users.