EI₁ 30 fire doors: the standard for fire-safe construction projects
Fire doors are an essential element of fire-safe construction.
Setting door standards.
Solid Interior Doors is the trusted door specialist for the professional market, the DIY segment, and custom projects.
Discover our interior doors for DIY enthusiasts and PROFESSIONALS
With 25 years of experience, Solid Interior Doors grows every day as a respected door specialist in the wood industry. Together with our customers, we create a success story with door solutions that consistently surprise in terms of price, timing, and innovation.
Solid doors, solid decisions.
Why our customers choose Solid
At Solid, you can buy not only interior doors but also accessories like handles, stoppers, hardware, frames, hinges… You name it, we got it!
Thanks to our large stock of 45,000 doors and efficient inventory management, we guarantee a fast delivery time of 5 working days for stock doors and a reasonable lead time for custom-made doors.
Solid Interior Doors guarantees deep technical know-how and expertise. We invest heavily in our team of door specialists.
With a strong future vision, sustainable investments and partnerships are a priority. This allows us to offer interior doors that continue to surprise in terms of price and quality.
With an innovative mindset, we anticipate market needs. Sustainability is key, with FSC® and/or PEFC certification pursued for our entire range.
Hands-on customer service is central. Customers can rely on a clear point of contact and efficient handling of requests.
Sustainable doors for the win
At Solid Interior Doors, we aim for the most sustainable production possible. We work to obtain FSC® and/or PEFC certification for our entire range of wooden interior doors. Additionally, we closely monitor EUDR developments and focus on ensuring sustainable supply chains.
We supply Solid doors and door sets exclusively to:
Solid Interior Doors supplies interior doors to major DIY chains and dealers.
We also supply door components – such as door panels, boards, frames, door linings, stops, and hardware – to resellers, large installation companies, and door manufacturers.
Solid is the go-to partner for projects requiring technical doors, such as acoustic or fire-rated doors.
We 100% guarantee that we never deliver our doors directly to your end customer.
Secure, sustainable, solid
URBAN RUSTIC OAK
This trendy interior door fits perfectly in a modern interior or in a more industrial setting.
OAK VENEER PANEL DOOR
Our inset oak veneer door panels feature solid oak profiles with vertical grooves. This door is the ultimate sleek, rustic interior door.
FERRO ELEGANCE
This steel door can be combined with glass panels, allowing you to fully customize it with a glass layout of your choice.
NEWS
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12.06
2026
Fire doors are an essential element of fire-safe construction.
07.05
2026
In this guide, we explain how to determine the dimensions of your front door.
07.04
2026
Measuring your window correctly is crucial for a perfect installation.
Let’s hear it for our doors
Excellent experience with Solid International!
A professional, responsive and attentive team. The products are of very high quality, with a wide range that perfectly meets market needs. The commercial follow-up is reliable and deadlines are respected, which is truly appreciated.
I highly recommend Solid to anyone looking for reliable solutions and a trustworthy partner.
A satisfied customer.
Exceptional customer service! I’ve used this company on a couple projects and I found the people here very knowledgeable & helpful.
Thank you for the clean materials and the spotless doors without any damage. Thank you for the collaboration!