Re: Screw for Hardiflex

Possibly the most secure would be one of those things you put inside the hole, you tighten them with a screw which folds the toggle at the other side securely. Don't know what these are called, but I have seen them on sale at To Suy along T. Mapua in Chinatown.

Re: Screw for Hardiflex

I think they are called ceiling anchors !!

If they don't understand this, then just describe your situation & what you have to fasten on your ceiling.

There are also some 'Screwmaster/ToSuy type stores in the Pinaglabanan area, and I saw one in the Pioneer/EDSA
area, just walk down the street before Pioneer (coming from the direction of Shaw Blvd), you will see a fastfood not sure if Wendy's.

Check out also any True Value/Ace Hardware in most of the malls !!

Cheers 🙂

Re: Screw for Hardiflex

Salamat sa suggestion. Yeah nadaanan ko yang shop sa may pinatubo/pioneer na puro screws ang nabibili. I'll drop by this weekend siguro.

Re: Screw for Hardiflex

Possibly the most secure would be one of those things you put inside the hole, you tighten them with a screw which folds the toggle at the other side securely. Don't know what these are called, but I have seen them on sale at To Suy along T. Mapua in Chinatown.

here we call them toggle bolts and varies in size and manufactured by metallics.usually ganyan talaga ginagamit pag drywall ang gamit.

Re: Screw for Hardiflex

Some people call it butterfly nut. I has wings that open once you insert it thru the hole. The right term is toggle bolt as VTEC mentioned.

Re: Screw for Hardiflex

Hi folks,
Has anyone used gypsum screw (the black one) to install hardiflex ceiling board on wood ceiling frame? There is available in the market hardiflex screw but it is for steel frames. For wood frames, jardie is recommending hardiflex nails. But i think the gypsum board screw is better than the nail. Any comment? Thanks.

Re: Screw for Hardiflex

Hi folks,
Has anyone used gypsum screw (the black one) to install hardiflex ceiling board on wood ceiling frame? There is available in the market hardiflex screw but it is for steel frames. For wood frames, jardie is recommending hardiflex nails. But i think the gypsum board screw is better than the nail. Any comment? Thanks.

definitely better to use screws than nails, increased holding power, but if you pre-drill before screwing the board, you not only improve holding power, you also improve the board strength...

Re: Screw for Hardiflex

Hardiflex is quite hard so the head of the screw might end up crushing or even cracking a panel. Best to test first.

I use those drywall screws often but with wood and only for temporarily clamping while the glue sets. These screws do not have that unthreaded portion near the top which wood screws do.

Wood screws have that unthreaded portion for a reason which is so the screw does not pull the inner portion of the piece being attached but rather the head clamps it from the outer surface. Strictly speaking the hole in the piece being attached should be a tiny bit bigger than the hole in the other piece which the threads grip. There are special bits to do this in one drilling operation.

Re: Screw for Hardiflex

ahh its from the dude you recommended.

Re: Screw for Hardiflex

Hi folks,
Has anyone used gypsum screw (the black one) to install hardiflex ceiling board on wood ceiling frame? There is available in the market hardiflex screw but it is for steel frames. For wood frames, jardie is recommending hardiflex nails. But i think the gypsum board screw is better than the nail. Any comment? Thanks.

the tip of the black screw intended for metal frame is somewhat flat and has fins that bore through the frame. for wooden frame look for black screw with pointed tip. CMIIW

Re: Screw for Hardiflex

Quote:
Originally Posted by delfirey View Post
Hi folks,
Has anyone used gypsum screw (the black one) to install hardiflex ceiling board on wood ceiling frame? There is available in the market hardiflex screw but it is for steel frames. For wood frames, jardie is recommending hardiflex nails. But i think the gypsum board screw is better than the nail. Any comment? Thanks.

Gypsum screw for hardiflex.. can be done but then you will have a problem when it comes to finishing cause a gypsum screw head will never be flat on the cement board as compared to using hardiflex screw or better yet FICEM SCREW (fiber cement screw)

if your ceiling joist is wood, i suggest you use the hardieflex nails. they finish flat. but careful not to hammer or the board as they tend to break easily.

but of course there is more than one way to skin a cat if your really bent on using gypsum screw to fasten your cement board on your ceiling.

Re: Screw for Hardiflex

Thanks for your comments. Tomorrow my hired worker will install the hardiflex 4.5mm on a wooden ceiling joist. Initially he wanted to use hardiflex nails but I insisted on using gypsum board screw size 1 inch.
I have an electric drill with variable speed. I experimented on the correct speed and I observed that the medium speed is the best. The screw was driven with a slight flushing so that it can be covered by patching compound. At low speed, there is no torque. The drill could not drive the screw. At high speed, there is a tendency to overdrive the screw. By the way the phillips screw drill bit should be magnetic for easy drilling on the ceiling. I will give additional feedback on the result of the installation.

Re: Screw for Hardiflex

Thanks for your comments. Tomorrow my hired worker will install the hardiflex 4.5mm on a wooden ceiling joist. Initially he wanted to use hardiflex nails but I insisted on using gypsum board screw size 1 inch.
I have an electric drill with variable speed. I experimented on the correct speed and I observed that the medium speed is the best. The screw was driven with a slight flushing so that it can be covered by patching compound. At low speed, there is no torque. The drill could not drive the screw. At high speed, there is a tendency to overdrive the screw. By the way the phillips screw drill bit should be magnetic for easy drilling on the ceiling. I will give additional feedback on the result of the installation.

Re: Screw for Hardiflex

Just to inform you buddies na mahirap palang gamitin ang gypsum screw sa hardiflex on wood ceiling frames. The screw can easily bore on the hardiflex but when it hits the wood kumakalas yung phillips drill bit sa head ng screw. Makunat kasi ang kahoy lalo na kung hindi pa masyadong dry. So we used the hardiflex nail instead. Sa light steel frames madali gamitin ang screw kasi once the screw bore a hole, wala ng resistance masyado sa drill bit.

Sa intallations ng roofing materials okay ang teckscrew gamitin kasi ang adaptor drill bit ay socket type kaya hindi kakalas ang teckscrew head.