I'd watched this video about 20 times before I attempted on my windows. I got a 13mm HSS bit especially for the job, but it would sometimes catch in my uPVC and my hand drill struggled, so in the end I used an oscillating multitool which worked much better. I marked out the template on masking tape as my window frames are black, then cut carefully along the lines. I used a smaller drill bit for the rounded edges. Hope someone else finds this useful. Actually quite straightforward once you know what you're doing.
The film infers that it is not necessary to cut a continuous slot and that it is ok to just drill a series of holes. It is, but beware - for a typical 400mm vent, the holes would have to be spaced with just 1.6mm between them to achieve the mandatory design airflow...
You can drill out, but still need to route the entire gap out using a palm router, or even multi tool. Keeps air flow to the max ( which is what you want) and gives a professional and clean finish. If you are retrofitting for building regs they will fail the works!
@@paulonionshi paul. Each vent manufacture will advise exactly what’s needed to reach the airflow required. Drilling a series of holes still leaves blocked areas. Route it all out. Even if it means dragging a drill bit across the vent area. Some inspectors won’t check and I have had issues with Fensa even when factory routed as they didn’t clock it was a 5000 vent
what kind of worker should i hire to install a vented hood? i need the hood to be vented through a double glazed window in kitchen. so i think I'll need some kind of glass worker. but i don't know what qualification worker i should look for?
Hi it does vary, have a look at the following... www.norrsken.co.uk/newsitem/trickle-vents-guidance-ventilation-part-f#:~:text=HOW%20MANY%20TRICKLE%20VENTS%20DO,has%20more%20than%20one%20bedroom.
Is there any way to easily test that air is flowing? As you can't drill a hole right through to the other side and have to drill on both sides I'm not sure if I did it right or stopped short. I drilled on both sides until I hit something solid.
Hi, you should be able to see daylight, test at night when it's completely dark or hold a flame to the inside where you drilled and see if it gets disturbed. 👍
@@DGPSUK Thanks. I note the upper windows that swing up do not have this metal although there may be a second layer. None the less when finished I can see through Ny wondows anr Anglia and another manufacturer and were installed at fdifferent times. and seem to have different construction.
@@ardentlieutenant3390 Hi yes different window profile extruders will have a different design and chambers but more or less the same idea, some companies also don't use reinforcement and some do. Hope it all goes well for you 😊
@DGPSUK I have dekurnik sliding doors just wondering where you would advise to put them on the 4 panel, the 2 central sliding doors or the 2 side panels
Hi, Oh sorry I'll double check, it's basically you can't drill all the way through on most profiles as there is a step and it wouldn't come through the other side where it's needed.
@@DGPSUKI have installed this kind of valves and It has a filter, some kind of sponge, but I'm living at the seaside, it's almost always windy here. It's ok in a quet weather, but in a windy weather these valves whistling all the day long, even you close them.
