It's all about the preparation...extending existing buildings

[MD @Minshall Buildings]

latest extension to a very large straw storage building we built a couple of years ago. Its vital to get levels right and do a proper site survey then it goes up perfectly.......this one galvanized for a maintenance free life

 

[teslacoils]

Galvanised massive straw store. What do they do, employ Rumpelstiltskin to spin it into gold?

 

[MD @Minshall Buildings]

damn...you guessed it!

 

[dubs]

how long do galv gutters last ? one of our sheds has them, 8 years old and the galv has gone in the inside.
Plastic far better ?
should they have coated them first ?

 

[MD @Minshall Buildings]

how long do galv gutters last ? one of our sheds has them, 8 years old and the galv has gone in the inside.
Plastic far better ?
should they have coated them first ?

Corrosion rate for zinc is approx. 2 microns per year ( using average UK SO2 levels). Your galv gutters are likely to be pressed from pre galvanized zinc sheet which will probably be max. 20 microns per side....therefore you may expect towards 10 years( average) before zinc coating is gone. That said if they are constantly wet or are not cleaned regularly then I guess this can be reduced quite a bit?
We fit both plastic and galv as client requires and each have pro's and cons.

In my view if you want steel gutters it would be best to press from thicker plain steel and then HDG after, but this is expensive which most clients wont pay...leaving the problem of maintenance or replacement of gutters during building lifetime?

No experience of coating gutters, but bitumen may help in providing another barrier between water and zinc coating so may increase life if applied before use?

 

[aidan]

Is there a difference in the grades of galvanised that can be specified.

have galvanised steel that came from ESB pole, at least 50years old, and indeed have a gate that is 50years old and also galvanised, both as good as new, and we are 4miles from the Atlantic Ocean

 

[aidan]

how long do galv gutters last ? one of our sheds has them, 8 years old and the galv has gone in the inside.
Plastic far better ?
should they have coated them first ?

I also have this problem and the side of the shed where the gutter runs is sheeted. I always thought the idea of using the galv gutters was as they are regular box shape they protect the timber from the rain and the sheet protects the rest.

I am doing a new build soon again with a sheeted gable end, If I specify a round plastic chute how do I protect the entireity of the timber from the elements. I cant sheet the side of the shed with corrugated sheeting as wont be able to mount my brackets for the chute to the timber.

Maybe there is a method I am unaware of ?

 

[designanddetail]

Is there a difference in the grades of galvanised that can be specified.

have galvanised steel that came from ESB pole, at least 50years old, and indeed have a gate that is 50years old and also galvanised, both as good as new, and we are 4miles from the Atlantic Ocean

Hot dip galv is all the same. The only difference is if you shot blast the steelwork before dipping you get about 60% thicker galv coating.

 

[designanddetail]

I also have this problem and the side of the shed where the gutter runs is sheeted. I always thought the idea of using the galv gutters was as they are regular box shape they protect the timber from the rain and the sheet protects the rest.

I am doing a new build soon again with a sheeted gable end, If I specify a round plastic chute how do I protect the entireity of the timber from the elements. I cant sheet the side of the shed with corrugated sheeting as wont be able to mount my brackets for the chute to the timber.

Maybe there is a method I am unaware of ?

If you have a timber eaves beam which you want to protect, the only way is to run the side sheeting up to the underside of the roof. Then tek fix a 150x22 timber board along the length of the building up at the eaves level then fix the PVC gutter to this. That way if the gutter goes or the timber rots, the issue stays outside the shed and is easier to fix.

 

[aidan]

If you have a timber eaves beam which you want to protect, the only way is to run the side sheeting up to the underside of the roof. Then tek fix a 150x22 timber board along the length of the building up at the eaves level then fix the PVC gutter to this. That way if the gutter goes or the timber rots, the issue stays outside the shed and is easier to fix.

i take it the standard that any fabricators use is still a metal gutter

 

[MD @Minshall Buildings]

i take it the standard that any fabricators use is still a metal gutter

we find that majority of supply only buildings we sell go for PVC these days... but steel is still popular on more substantial sheds?

 

[BobGreen]

i take it the standard that any fabricators use is still a metal gutter

We tend to use steel box gutters on buildings 50’ span and above and plastic on the smaller buildings

 

[Mur Huwcun]

I also have this problem and the side of the shed where the gutter runs is sheeted. I always thought the idea of using the galv gutters was as they are regular box shape they protect the timber from the rain and the sheet protects the rest.

I am doing a new build soon again with a sheeted gable end, If I specify a round plastic chute how do I protect the entireity of the timber from the elements. I cant sheet the side of the shed with corrugated sheeting as wont be able to mount my brackets for the chute to the timber.

Maybe there is a method I am unaware of ?

Can you use some eaves flashings on the timber first before the roofing sheets?

 

[aidan]

we find that majority of supply only buildings we sell go for PVC these days... but steel is still popular on more substantial sheds?

Haven’t built enough in recent times to comment. Is the usual method of mounting the Pvc chute as per your explanation above.

How long will a timber last when exposed entirely to the weather

 

[Forever Fendt]

External Galv gutters will be the best option long term the ones that support the bottom of the roof sheets and the side cladding will be a nightmare at some point, we fitted our first ones ( external) in 1995 and they still work and don’t leak at all and have only been cleaned out when grass was growing over the top and no other maintenance and less than £10 per meter to replace