Tin Roof Recommendation

[Lightspeed]

[NorthernRaider]

[Lightspeed]

We considered these, but for rainwater harvesting we decided the risk of leached metals was too great.

Bear this in mind, if going down this route.

Our system has a kind of acrylic inert surface that will resist acid content of rain. It also resists moss and lichen growth, so the water coming off it is not picking up any secondary contamination.

For drinking roof harvested water we both filter and boil before consuming.

The dew collecting capability has been a surprise to us, and very useful of course. So as not to mislead, the roof is quite large ( in the order of 250 sqm) so it has a good sized area of capture. Also the ability to harvest water from dew is very much location specific, and needs to be considered an opportunist and occasional source rather than a reliable one.

[NorthernRaider]

sounds brill and its a huge improvement over delicate slades or clay tiles

[Midnitemo]

I have picked a tin roof as opposed to tiles for some of the same reasons on my soon to be erected workshop , gone for a pent as this gives me the best southerly orientation for the solar panels I plan to install , the roof will feed into an IBC at the south end of the workshop , I was initially concerned with the condensation/insulation issues but the roof has a drip tray and membrane to help with this , not sure what the harvest is likely to be of a 250sq ft steel roof but I'm hoping once the IBC fills up i'll be able to keep it fairly full , going to insulate the IBC too.

[Straight Shooter]

Excellent article LS and put together well and you cover all aspects from a practical proof of the pudding point of view , as many are aware , my planning permission has been in place for a few months, the next stage is calcs for the raft foundations and full drawings for building regulations.

When we applied for planning consent we had to give a brief description of overall finishes outer walls,roof type etc. at that early stage (to match existing) was used in order for a smooth ride TO GET permission granted.

As of yesterday (FRIDAY) i have committed to the calcs and full drawings being prepared, i have another meeting next week to finalize specifications and i intend to pursue a (tin) roof for the new build .

From a practical point of view, when i built the triple garage about twelve years back, i built in steel box section ...walls 60mm x 60mm along with the roof of the same section, all was clad in steel profile sheet externally, ALL the internal was insulated with insulation quilt (wool) then hardboard sheet was fixed over that .

This has morphed into my workshop, i have to tell you ....its very warm in winter and very cool in summer , in short its a great place to work (and play ) so i can well understand why LS is a happy bunny on many fronts....it works....and works well.

[Lightspeed]

I have picked a tin roof as opposed to tiles for some of the same reasons on my soon to be erected workshop , gone for a pent as this gives me the best southerly orientation for the solar panels I plan to install , the roof will feed into an IBC at the south end of the workshop , I was initially concerned with the condensation/insulation issues but the roof has a drip tray and membrane to help with this , not sure what the harvest is likely to be of a 250sq ft steel roof but I'm hoping once the IBC fills up i'll be able to keep it fairly full , going to insulate the IBC too.

Midnight,

Your setup will be fine. Condensation should not be a problem, provided you install the vapour barrier correctly and vent the ridge. PM me if you need a drawing of the venting method on my roof. In fact quite the opposite of condensation, you'll find that you have a great drying system. One caveat: I don't know what you mean by a pent roof, but assume its pitched? if you keep the pitch steep condensation on the underside of it will run down the inner surface by surface attraction and gravity, dripping into the gutters from the underside.

Steve has some experience with condensation under metal roof structure of his workshop I seem to remember. He may be able to add advice.

Insulation: For sure the metal roof will transmit temperatures into and out of the loft space very efficiently! ( exactly the opposite of insulation) Two choices. Make a cold loft by fitting a ceiling with traditional GF insulation above. Or create a warm loft with solid insulation on the underside of the vapour barrier.

One added benefit of a metal roof that should appeal to you: It mages for an excellent ground plane for antennas, and even lets mag mounts be used for a fully demountable solution .

[Lightspeed]

SS

I think you'll be pleased with that solution...... now you and Mrs SS have a good excuse to come and visit to see how ours is working!:-)

I recommend that you spec in roof hatches adjacent to chimneys, with fixed access steps from them to the chimney itself, as this will be the only safe access you'll have.

Will you have habitable rooms within the loft void of the new house?

BR