Question 1

Walk me through how you build a corner lead in block.

Accepted Answer

Corners set the line for everyone else on the wall. If you can build one, you're past apprentice level. Start from layout: check the footing, snap lines and confirm the corner is square Set the first course in a full mortar bed and get it level and plumb before going higher Rack the lead back, checking plumb, level and gauge with the story pole on every course Mention how you tie the line off so the rest of the crew can fill in

Question 2

What's the difference between working in brick, block and stone?

Accepted Answer

The mason title covers all three, and the foreman wants to know where your real experience is before putting you on a wall. Brick: smaller units, tighter tolerances, face appearance matters and joints are on show Block: heavier units, grout and rebar in the cells, often structural work below grade Stone: every piece is different, so you're cutting, fitting and reading the pile Be honest about which you've done the most and which you're still learning

Question 3

How do you tell when your mortar is right, and what do you do when it stiffens on the board?

Accepted Answer

Bad mud ruins walls. This shows whether you understand the material or just use it. Describe the consistency you want: holds its shape on the trowel, spreads without slumping Explain retempering with a little water early on, and when mortar is too far gone to save Mention how hot, dry or windy days change how fast you mix and how much you put out Say you'd rather toss a batch than lay units in mortar that won't bond

Question 4

Have you done any repointing or restoration, and what mortar would you use on an old brick building?

Accepted Answer

Restoration work is where a lot of masons get hurt by using the wrong material. They want to know you won't damage the building. Explain raking out the old joints to a clean, even depth without chipping the brick edges Say the new mortar should be softer than the brick, often a lime mortar on older buildings Mention matching the colour and joint profile so the repair doesn't stand out Note that you'd follow the spec or the preservation officer's direction where there is one

Question 5

How do you keep water out of a masonry wall?

Accepted Answer

Leaks are the most common callback in this trade, and callbacks cost the contractor money. Talk about through-wall flashing at the base, over openings and at shelf angles Mention weep holes and keeping the cavity clear of mortar droppings Describe full head and bed joints and tooling joints to shed water Give an example of catching a flashing problem before it got covered up

Question 6

What do you do when the forecast calls for frost or a heat wave on a wall day?

Accepted Answer

Weather is the biggest risk to masonry quality, and they need someone who plans for it rather than finding out the next morning. Cold: protect materials, use heated water or enclosures if the job allows, cover the work with blankets Heat and wind: wet the units if the spec calls for it, mix smaller batches, cover fresh work Stop laying when conditions make good work impossible, and tell the foreman early Mention that the project spec usually sets the cold and hot weather rules

Question 7

How comfortable are you reading drawings and laying out openings?

Accepted Answer

A journeyman mason is expected to find door and window openings, control joints and elevations on the plans without being walked through them. Name the sheets you use: plans, elevations, wall sections and details Explain how you mark openings and lintel bearing on the wall before you get there Mention checking dimensions against the story pole or laser level Say what you do when the drawings and the site don't agree: stop and ask

Question 8

Tell me about a time a wall you built wasn't right. What happened?

Accepted Answer

Every mason has torn something down. They want honesty and proof that you learn. Pick a real, specific mistake, such as a course out of level or a missed tie Say how you or someone else caught it Explain what you did to fix it, including tearing it out if that was the right call Finish with what you check now that you didn't check then

Question 9

What does safe scaffold work look like on your crew?

Accepted Answer

Masons spend much of the day on scaffold with heavy loads, and falls and dropped material are real risks on these jobs. Talk about inspected scaffold, full planking, guardrails and tie-ins Mention not overloading planks with block and mortar Say you speak up or stop work when something looks wrong Name any safety cards or training you hold, such as an OSHA course

Question 10

How do you work with a tender or an apprentice?

Accepted Answer

Your production depends on the people feeding you. They want to see whether you'll lift the crew or grind it down. Explain how you set up the board and scaffold so the tender knows what you need Give an example of teaching an apprentice something specific, like striking joints Show patience without letting quality slip

Question 11

What tools do you bring, and which do you expect the company to provide?

Accepted Answer

It's a quick check on experience and on whether you'll show up ready on the first morning. Name your own hand tools: trowels, jointers, levels, line and blocks, brick hammer, chisels Say which power tools you're used to running, like a masonry saw or grinder Ask what the company supplies, such as the mixer, scaffold and laser

Mason interview questions and how to answer them

The 8 questions you will almost certainly get

A forgettable answer, and a better one

"Walk me through how you build a corner lead in block."

"What's the difference between working in brick, block and stone?"

Questions to ask them

Need more Mason interviews to prep for?

The question	What they want to know	Your angle
Walk me through how you build a corner lead in block.	Corners set the line for everyone else on the wall. If you can build one, you're past apprentice level.	Start from layout: check the footing, snap lines and confirm the corner is square
What's the difference between working in brick, block and stone?	The mason title covers all three, and the foreman wants to know where your real experience is before putting you on a wall.	Brick: smaller units, tighter tolerances, face appearance matters and joints are on show
How do you tell when your mortar is right, and what do you do when it stiffens on the board?	Bad mud ruins walls. This shows whether you understand the material or just use it.	Describe the consistency you want: holds its shape on the trowel, spreads without slumping
Have you done any repointing or restoration, and what mortar would you use on an old brick building?	Restoration work is where a lot of masons get hurt by using the wrong material. They want to know you won't damage the building.	Explain raking out the old joints to a clean, even depth without chipping the brick edges
How do you keep water out of a masonry wall?	Leaks are the most common callback in this trade, and callbacks cost the contractor money.	Talk about through-wall flashing at the base, over openings and at shelf angles
What do you do when the forecast calls for frost or a heat wave on a wall day?	Weather is the biggest risk to masonry quality, and they need someone who plans for it rather than finding out the next morning.	Cold: protect materials, use heated water or enclosures if the job allows, cover the work with blankets
How comfortable are you reading drawings and laying out openings?	A journeyman mason is expected to find door and window openings, control joints and elevations on the plans without being walked through them.	Name the sheets you use: plans, elevations, wall sections and details
Tell me about a time a wall you built wasn't right. What happened?	Every mason has torn something down. They want honesty and proof that you learn.	Pick a real, specific mistake, such as a course out of level or a missed tie