attic insulation

Hi group,
My 1923 house doesn't have enough attic insulation according to modern
standards. Trouble is, there are lots of flat boards fastened to the beams
making access to all parts of the attic very easy. Would pulling them up,
installing attic blankets, then sistering boards to the beams to raise the
'floor' be the best way to have both properly installed insulation and an
attic floor?
Chas

that is exactly what i did

I used 2x10's and 1/2" plywood as cleats from the new lumber to the old.
then screwed it all together. When the insulator came by all he had to do
was shoot under the plywood flooring. I stuck with 4 foot wide. All I kept
up there were card board boxes, flattened. Be careful that you do not put to
much weight up there, ceilings are seldom designed for much extra weight on
top of the structure.

That will definitely allow you to get more insulation in. How
important that is, and how much it will help, depends on what's there
now and what climate you are located in.