Tell me about it la bro... at first i wanted to just replace all the damaged wood but the problem is my roof design is just terrible. The existing gutter runs almost at the center of the house and when it pours cats and dogs, ill get waterfall at various parts of my house!

which of cause led to termite infestation due to dampness.. thats the reason why i choose to go with LWS..

Termite is a whole separate issue i need to deal with as well!

For 1900 sqft as well?

I seriously doubt it will last forever but apparently 15 - 20 years is what we are looking at. Quarterly maintenance is required apparently.

I really wish i could do without plaster ceiling or any, i rather leave it bare but with LWS its going to look like a factory roof without ceiling.

So for this reno, Option A will require me to redo my existing plaster ceiling (3 rooms +1 bathroom + Kitchen) and my entire porch.

Option B, I dont have to do any plaster outside my house.

gogo2:

Ill take some pictures and post it up later, in fact i intend to post a before and after reno as well. Hopefully it helps the some who are facing similar issues.

To answer your question, If the incline is increased then im sure the area increases too but i think thats the least of the problem. Because you need to have the space to make that incline possible in the first place. 

Let me explain:

The root cause of my problem is the design of the roof itself. It arcs inward and the gutter runs almost to the centre of my house. Initially it was all fine but in time as the wood started to bend and sag, the gutter itself lost its shape and water was getting clogged at various parts. To make matters worse we didnt get enough incline on the roof when we last renovated.

When it rains heavily, of cause, water overflows from the clogged parts and leaks thru the ceiling. To make matters worse, termite started munching those delicious damp wood and I didnt realize it until it was way too late. Now Ill have to replace almost half of the damaged trusses, which im not happy about because it still does not address the gutter design issues.

So i have decided to change the wood trusses to LWS and change the design of the roof to get rid of the gutter running in the centre. The new design will see a gable that channels the water to the sides of the roof allowing for my side roof gutter to trap water and guide it to the drain.

Yes the gable increases cost but i have no other choice because to make the 25 degree incline ill have to increase the starting point of the roof by almost 3ft which then forces me to tie bricks around my balcony, shut 3 of my windows and still live with the fact that the side gutter may only reach a height of 5ft +/-.

I think Ill have a go with the bait system by Rentokil since they guarantee their service. RM 2500.00 And yearly RM700.00.

What's include in the yearly fee of rm700?

I've done my house with rentokil around 3 years back and it cost me about rm2300 for 22x100 single storey terrace. Using bait follow with spray roof and drilling system. Mine have no yearly charge after that.

Im not sure how the sqft calculates for baiting but my house is about 5000 sqft and thats what he quoted.

without going into too much details, i would suggest the following:
1. go for LWS
2. do up an option of using metal roof instead of recycling your existing roof tiles or epoxy painting over it

why?
your big ticket items are mainly the steel roof truss (RM14k) and supply and install of conc roof tiles (RM8k). RM22k/RM42k.
and plaster ceiling @ RM10k for just approx 1,900sf? that's about RM5.25psf!!!
negotiate for lower price of your plaster ceiling. that's a little absurd!

magic of metal deck roofing.
1. less joints as metal deck are large panel and if custom length, means no joint except at apex. less chance of leakages. less joints also mean no chance of thieves entering. do you know some roofing profiles does not even require any nailings? they use clips to interlock!
2. metal is lighter, hence, you would be able to re-space your LWS spacing to be much less. dependent on profile selected, you may be looking at truss spacing of up to 2m. battens can varies up to 1.2m instead. so expect your RM14k to be greatly reduced.
3. bigger roofing piece means less work. hence installation cost would also reduce. RM8k going down.

things to watch out for:
1. some people dont like the metal look
2. you need to add rockwool for thermal resistant and noise resistant
3. select profile to maximise your truss spacing and batten spacing. this would give you huge cost saving.

good luck!