Impact Driver or drill which?

Man Vs. Impact Driver


It’s understandable why Tradesmen love using Impact Drivers, they save time on the job and the power they unleash is incredible! No wonder they are so popular amongst tradesmen.

 Talk about torque these tools deliver!

  • Concrete
  • Timber
  • Steel
  • Just about anything!

They get the job done fast on time and save money! Right?

Are Impact Drivers suitable for screwing down a metal roof?

When we exhibit at exhibitions and bring out our long screws – Storm-Tite and Timber-Tite, the very sight of these fasteners up to 300mm in length can attract a crowd and when Gary starts to drill we instantly have a captive audience.

 Storm-Tite’s Performance Demonstrated at the Tradesman’s Expo

No leaks, No problems Storm-Tite’s large domed washer covers both holes.


There is no argument about the power and performance of these tools but are they suitable for metal roofing application.

This is an important question which may have massive repercussion for the contractor if not made correctly.

Let’s look at the advantages of impact drivers

  • They have torque
  • They have incredible power
  • They can power through just about anything with very little effort from concrete, timber structures, timber decks into drywalls etc
  • There is virtually no kickback
  • Easily held in one hand

No wonder they are a tradesman’s delight, little effort with great rewards.

But… are they suitable for the precise penetrations required for screwing down metal roofing sheets.
We know they are fast and save the contractor time and money in the short term. What about the long term effects? 

 Do they damage the paint or more importantly the protective galvanised coating?

When maintenance is required on a metal roof, maybe an air-conditioning unit, will the contractor find premature rusted fasteners, fasteners that were painted and were coated with a Class 4 Alloy now degraded long before they should be?

Advantages of a cordless drill

  • High and low speed options mean greater control
  • Clutch adjustment indicator to set the screw penetration depth
  • Precise hole locations where required

That brings us back to the same question, are impact drivers meant for screwing down metal roofing?demo showing a leak proof seal

The answer is NO, the power of the impact driver can easily damage the paint of the hex head of a roofing fastener and then degrade the Class 4 coating comprising the integrity of the coating and reducing its life.
Drill speed 2000rpm plus is required for drilling into metal sheeting, however you can’t control the speed of an impact driver, they are designed to kick in when they hit resistance.

This is where they excel for general construction but, not for metal roofing.

 Precision is required here, not uncontrolled power….

Action Fasteners will not warrant any roofing screws where an impact driver has been used the reason being:

Action Fasteners Pty Ltd takes pride in inventing, designing and manufacturing the Storm-Tite range of roofing screws here in Australia especially for Australian conditions.
The protective coating complies with AS3566 Class 4 and is deposited with great care to match the life of the ColourBond® sheeting. Installation using an impact/hammer drill action will cause damage to the coating and void any/all warranties on service life.


Hylton Parker Fasteners New Zealand

Hylton Parker Fasteners New Zealand conducted a test featuring the results of an Impact Driver, Battery Drill and Screw Gun on the hex screw head the results speak for themselves.
Watch this PowerPoint presentation click here this is a large file 2MB


Demonstration of the power of an impact drill vs. driver drill

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