25 Mar A Quick Guide to Door Threshold Types
A door threshold is the strip you see at the bottom of a doorway. While it might not catch your attention at first look, it actually does a lot of work. It provides weather protection, improves insulation, and can even make it easier for people using wheelchairs or strollers to move through the door. Below, we will explain the three common types of door thresholds you will see in composite doors in Cardiff.
Low threshold
A low threshold is all about improving access for people in wheelchairs, those using strollers, or anyone who can have trouble with steps. It sits close to the floor, so there are no bumps to step over.
According to the UK’s Building Regulations Approved Document M, this type of threshold should not be more than 15mm high. And if any part of it is more than 5mm tall, it must be sloped or rounded for safety reasons.
A low threshold design is extremely popular in newer homes because it brings in more natural light and makes everything feel open and connected. But because the threshold is so low, it does not block water as well during heavy rain. This is why low thresholds usually need extra waterproofing. Some high-quality composite doors in Cardiff, like Smart’s Visoglide and Visofold, have integrated drainage and high-performance seals to keep water out without ruining the clean and modern style.
Rebated threshold
A rebated threshold has a small raised edge, which is usually between 25mm and 50mm high. When you close the door, the door presses tightly against this raised edge to keep draughts, dust, and moisture from entering the home.
Some doors, like the Visofold 1000 and 6000, use a rebated threshold to give you better weather protection and energy efficiency. To give you an idea, the Visofold 1000 can achieve a U-value of 1.5W/m²K if you are using a glass panel rated at 1.0 W/m²K. Those are some very impressive numbers if you care about efficiency at all.
Of course, because this type of threshold sticks up a little more, it may not be as easy to walk or roll over. If accessibility is a priority to you, that is something that you have to consider.
Recessed threshold
A recessed threshold sits down inside the floor, so your indoor flooring and outdoor surface meet at the same level. This threshold is usually seen in luxury homes or commercial buildings. UK building regulations require that these thresholds stay under 15mm high and should be sloped if any part is more than 5mm tall.
Smart’s Visoglide Plus doors offer the recessed threshold option. These doors look modern and are ideal for open-plan homes where you want the outside to feel like part of the inside.
Are you looking for high-quality composite doors in Cardiff?
If you are looking for high-quality composite doors in Cardiff, choose a trusted local company like Affordable Quality Windows (AQW). AQW offers a huge selection of composite doors, primarily in the Neath, Port Talbot, Bridgend, Cardiff, and Newport areas. Contact us today to learn more, request a quote or book a survey.