New workshop for 2020

[Sheptonphil]

Where polythene is definitely requires around Celotex is when you screed over it. I am not at all clear as to why I showed it in that sketch under a floating floor. In fact, there are two or three things that have evolved over the years to be somewhat different from that old drawing. Mike from 2010 will applaud if you put it in. Mike from 2020 will shrug and say "whatever". Put it this way, I can't see it doing any harm, other than minor damage to your bank balance.

No problem, I didn’t buy it today, so will carry on without it.

I have a dilemma with the internals of my build. I had always planned to have the extra section at the back a separate room for dust extractor, compressor and sink. Indeed it was going to be built as an addition to the workshop afterwards. With the cut roof as is, the wall that creates the room is not load bearing, and doesn’t even need to be there.

So, do I keep the separate sound proofed room, or remove the wall and make it a single large room. The extra bit is 2.7m x 2.1m. I’ve attached the plan view.

It’s the red wall And grey door between the two rectangles. I’d keep the bit by the sink.

 

[MikeG.]

If that were me I'd have it as a metal-working workshop. Keep the filth in one place. In an ideal world, a separate finishing room would be a real treat, but frankly, it'll just become a store area/ dumping ground, so it might be best open up the space into one large area. Unless you have very distinct activities envisaged for the workshop.

 

[Sheptonphil]

If that were me I'd have it as a metal-working workshop. Keep the filth in one place.

Now that is a separation I hadn’t considered. In the last workshop, the grinding, and welding was done in one corner, but was as you say a really dirty corner which was beginning to spread. I was also very conscious of never to weld after any woodwork for fear of dust explosion. I’ll be looking at the space tomorrow and see if it will work as a dirty room.

I guess now it’s built it will be easier to take down if it doesn’t work as a separate room as against ripping it out and then wishing I’d left it. Thanks for the suggestion.

 

[HOJ]

Just to add a comment with regards the second membrane, we use one in all cases, on top of the insulation for screed floors and floating floors, in the case of a floating floor it acts as a slip membrane, to allow the floor to move and as another VCL, flooring manufactures generally also specify it as a requirement, however, your call, we use it because we have to.

 

[Noggsy]

I think planning in a sound-proofed room for compressor and extractor is extremely sensible and I would definitely preserve that where possible. Could the room double as a dirty as well?

 

[DBT85]

If its build in right the compressor and extractor can be under the dirty bench and boxed in appropriately. Obviously with provision for air in and very warm air out.

 

[Sheptonphil]

Just to add a comment with regards the second membrane, we use one in all cases, on top of the insulation for screed floors and floating floors, in the case of a floating floor it acts as a slip membrane, to allow the floor to move and as another VCL, flooring manufactures generally also specify it as a requirement, however, your call, we use it because we have to.

For the cost, I’ll put on a layer of 600 or whatever they have locally N the top of the PIR. The slip for movement seems sensible, the insulation won’t be going anywhere as I’ll be foaming the perimeter to seal the edges and taping the joins.

 

[Sheptonphil]

If its build in right the compressor and extractor can be under the dirty bench and boxed in appropriately. Obviously with provision for air in and very warm air out.

I think that is the way to go.

I cleared all the tools, the temporary 8x4 workbench, mitre saw and ladders out the space today in readiness for laying the floor tomorrow. The space is HUGE, and then the separate room.

The extractor is the Jet 1100a, a 6’ high HVLP chip extractor which will be ducted along one 8m wall of the main workshop with blast gates to four machines, utilising all the pipe work I took with me from my last workshop when we moved in January. The compressor will have its own home in a vented box, twin water traps at outlet and piped to three pressure controlled wall outlets around the workshop with 6mm tubing as I had before. One will be for lathe duster, one for the air brush and a spare for all other air tool on a 10m retractable reel.

I put a wood frame where the small sink, extractor and compressor were planned for. There was a decent space still to put a dedicated metal topped work bench with vice, storage for the mig bottle to side and welder under the bench.

I really think this space will work as the plant room as planned, and a dirty room not even considered (thanks Mike).

My thoughts on putting a small spray booth table in there as a clean room was ill conceived, as of course this is the home of the dust extractor, so will never be completely dust free or clean.

Also managed to fit the door frame and door in to the back opening.

Forgot the pics, will take some in the morning.

 

[Sheptonphil]

Order just place for 38 sheets of plasterboard and roof insulation hopefully here for mid week. Got to keep thinking ahead with the JIT system.

 

[DBT85]

Order just place for 38 sheets of plasterboard and roof insulation hopefully here for mid week. Got to keep thinking ahead with the JIT system.

Ha. Yeah I'm just going to have piles of stuff here till its done (hammer)

 

[DBT85]

Phil,

Was it actually eurovent classic membrane that turned up or was it one of their other ones?

 

[Sheptonphil]

Phil,

Was it actually eurovent classic membrane that turned up or was it one of their other ones?

Haven’t got the wrapper any more, it’s not written on it, just the overlap markings.

It really is superb membrane.

 

[DBT85]

OK no worries. Just ordered from their website and it does actually say its 135, but not any branding. Saved a tenner tho!

 

[Sheptonphil]

More progress, back door fully sealed and finished, insulation laid on the floor, joints taped and edges foam filled.

Will trim off excess foam tomorrow ready to lay the floorboards over the weekend.

For the first time, I have gone with gun grade foam instead of the squirty hand held can that has two speeds, none and full throttle. The gun gives so much control over use there is no comparison. You can also use and leave without cleaning tubes or the nozzle blocking as the foam only reaches air at the very tip of the nozzle, nothing to dry and block. I shall use the foam gun for low expansion PU foam glue for the floorboards. The poly sheet between insulation and floor will stop it all becoming a solid mass.

Meanwhile I need to work out roughly where the workbench will go as I will need a pair of electric sockets in the floor. The bench is an island and has three double sockets built in along with a permanently installed router in one end which are fed from a cable plugged into floor socket. I think I may have to run a couple of feeds under the floor, mark where they are and use the one (or two) that are best positioned. The rest of the electrics and air line will be run in conduit from a 40mm trunking around both rooms.

 

[DBT85]

Yeah my plan was also to put some sockets in the floor, the insulation is easy enough to cut a notch in to drop some cables in.

Oddly I'm more worried about making a door for mine than the entire rest of the build!

 

[Sheptonphil]

Yeah my plan was also to put some sockets in the floor, the insulation is easy enough to cut a notch in to drop some cables in.

Oddly I'm more worried about making a door for mine than the entire rest of the build!

Yes, that’s why I think I’ll let two cable sets in and leave one redundant if not required.

Hmm, I can’t make the front door until I get the workshop operational. I want to put an outward opening stable door on, solid bottom, two or four glazed panels at the top. I did fleetingly think French doors, but SWMBO thwarted that plan.

I bought a pre-owned UPVC door and frame for the rear which will make that really secure, found on the bay for £40 which fitted the door opening I’d already made. There is an eight foot wall to get over, with no easy way of getting back over that way so like a humane trap if anyone did try. Won’t be humane if they do get caught though.

 

[Sheptonphil]

I think planning in a sound-proofed room for compressor and extractor is extremely sensible and I would definitely preserve that where possible. Could the room double as a dirty as well?

Thanks, that’s now the plan, keep the dirty stuff out back separate. I mocked it up and it will work fine.

 

[Sheptonphil]

A plodding day, too hot to move too quickly.

Figured out the island workbench will go in one of three places, so I’ve set two electric cables into the insulation of which at least one will be in the correct position to instal a floor socket to power the workbench sockets. I may just put a second floor socket in for general use seeing the cables there now. The tails are going to join the ring on the house wall side.

Eighteen of the twenty two floorboards are now down and glued. Just the Dirty Room, as it’s now called, to do.

 

[Sheptonphil]

A gentle half day today finishing the flooring and a general tidy up ready for the next part, the framing and hanging of the middle door, insulation of the loft space and frame a loft hatch opening.

 

[Sheptonphil]

Almost out of materials till the plasterboard arrives on Thursday so only a couple of small jobs done.

Guttering temporarily fitted to the rear drain in case the rains come tomorrow.

I managed to get a door lining for the middle door, so this is now installed, sealed, and the door hung. Insulation has been installed between ceiling joists at both back and front ends. I used the leftover Celotex board cut around the rafters and a layer of rockwool I had over from the walls, rather than the roll out insulation, to make sure I didn’t block the ventilation from the eaves. The rest of the ceiling will be done with 200mm Knauf earth wool when it arrives with the plasterboard.