Velux skylight insolation & dry ridge system

Question

Firstly how watertight are roof skylights is it wise to have them installed. And secondly dry ridge system, compared to old school cement ridge!  (which is better for the customer!).

Chris · Accepted Answer

Hi Kenneth a well fitted velux will be water tight , dry ridge is a great system when fitted correctly, and will allow a roof to breath . If you need anything let me know many thanks

Elliot · Answer

Yes they can be water tight if fitted correctly and dry ridge systems are very good peices of kit its a lot quick to fit

Wesley · Answer

Hi velux are completely fine as long as you use a back gutter felt.
Do and dry ridge systems are fine as long as there fitted correctly and the fitting kits are made up the right way.

Justin · Answer

Firstly, I would buy the best skylights. There is out there and the lead in manufacture which is velux not sure what kind of roofing tiles you have make sure you get the right flashing kit information available on their website.
Secondly, always get your contractor to use the collar which is supplied in the flashing kit

Harvey · Answer

Roof skylights are great for what we use them for if you have a loft room/office etc. They shouldn’t leak asking as you got the right kit for the skylight and mainly make sure they fitted correctly by someone who Knows what they’re dealing with, ie…. Professional.

I’ve done roofing now a long time I don’t mind either method, but personally I’m not keen on dry-ridge only for look in classy or old traditional British houses much prefer mortar but yet modern houses it’s looks quite smart with the dry-ridge …. Same as all roofing work aslong the works done correctly by a professional tradesman they should never leak

Liviu Adrian · Answer

My professional-style recommendation:

If this is your forever home → Dry ridge + quality skylights
If this is a quick flip → Cement ridge + avoid skylights

Danny · Answer

If installed by a professional skylights will be watertight.
Mortar ridgelines are tried and tested for many years and if done correctly can last many years, But they will eventually need redoing.
A dry ridge system is maintenance free and usually suggested as they offer air flow to help with ventilation.

Thomas · Answer

Roof skylights and dry ridge systems are both very reliable when installed correctly.

Velux skylights are designed to be fully watertight and come with integrated flashing kits that suit specific roof tiles and pitches. When fitted properly, leaks are extremely rare. Problems usually occur only with poor installation, not the product itself. They also improve natural light and ventilation, making them a good long-term upgrade.

A dry ridge system is generally far better than traditional sand-and-cement ridges. Dry ridge systems are mechanically fixed, allow roof ventilation, and flex with natural roof movement. Cement ridges often crack over time and need ongoing maintenance, whereas dry ridge systems are maintenance-free and comply with current building regulations.

At Quality Roofing and Guttering Ltd, we install Velux roof windows and dry ridge systems across London and always recommend dry ridge over cement for durability, ventilation, and peace of mind.

In short: Velux skylights are safe and watertight when fitted correctly, and dry ridge systems are the better option for most customers.

Lloyd · Answer

Dry ridge system is the way forward helps the roof breathe velux windows when fitted correctly are water tight

Jordan · Answer

In my opinion, fitting sky lights is a great way to open up the room and obviously add natural light, fitting them correctly with the right bonds and soakers you should not have a problem with them.

Dry ridge again, fitting correctly works well. The only way I've seen a correct installment of a dry ridge system fail is from the tiles cracking due to weather damage. Cement/wet fix will perish eventually no matter what.

Thank you.

Velux skylight insolation & dry ridge system

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